Database Users

[GUIDE] How to unbrick Acer Iconia A500

I just got from a friend an Acer Iconia a500 he says that is bricked.
I tried this method: http://forum.xda-developers.com/showthread.php?t=1572622
But I can't continue because I don't have ADB access, what should I do?.
Thanks for all and God bless you.
EDIT:
I got everything to using the secret APX mode, but now is still everything the same the Android System is still there and not charging and not touchscreen...
Go to the bottom to see how I solved this lol...
Click to expand...
Click to collapse
If your tablet Iconia 500 (ONLY ACER ICONIA A500) went crazy, and present the next symptoms (Yes it has flu...):
-flu
-Android System icon
-Doesn't want to charge (20% / 15% 12%).
-TouchScreen is not responsive.
-Always when you turn it on says Shutting down and never shuts down.
-In case you're using ICS shuts down immediately without even make you see.​
The solution is the next!:
1. Download this file: http://www.4shared.com/archive/zyP91E0C/root-321-V4.html (This is the file to put recovery in case that you don't have it).
2. Extract all the files in any folder, it doesn't matter where you put it.
3. Go to Image Folder and rename the recovery to: anyname.img.
4. Download any of the lastest recoveries for Acer Iconia a500 (it will work believe me lol).
5. Put the recovery in the Image folder (Ex. Iconia/root-3.2.1/Image/) and rename it to recovery.img
6. Now open with Administrator Rights DotNetDetecter.exe
7. Continue, continue and continue.
8. If you have ADB Active just put it and it will install it. (If you don't have it just go to 8.1)
8.1 Shut down the tablet completly, connect your USB Cable *micro* (Tablet-Computer), take a paper clip and put it on reset without release it then press the power button and count until 4 or u4ntil you hear the sound when you plug something into Windows
8.2 Now your tablet is in APX Mode and the Acer Utility should now work.
9. Put your UID with a 0 in front of all the numbers (if you don't have it go to secret step).
10. Now let everything work. After everything is done you should have recovery now.
11. Press down volume and the tablet will take you to the recovery.
12. Download some ROM 3.2 or ICS 4.0.3, install it via recovery.
13. Download this file: http://www.mediafire.com/?9svnvdk982sxrw4
14. Install the version you have choosen via Recovery.
15. Voila! Your tablet is revived right now
Press thanks button if this helped you =D
SECRET STEP TO GET UID (IS NOT SECRET THOUGH... lol)
Just go to USB tools and use USBdeview, and is done... (Remember to stay in APX Mode)
CREDITS:
-Fguy on www.4pda.ru (EC_FLASH FILES)
-timmyDean on XDA (Root-3.2.1-V4 FILES)
-Moscow Desire (XDA Member, if it wasn't for him it couldn't get to see the light)

thanks for the great guide but could you point me in the right direction for the lastest recoveries for Acer Iconia a500 as the links i find dont work
thanks in advance
matthew

mjfaderway said:
thanks for the great guide but could you point me in the right direction for the lastest recoveries for Acer Iconia a500 as the links i find dont work
thanks in advance
matthew
Click to expand...
Click to collapse
Acer Recovery from the Market should have the most recent RA Recovery, and the original GPL compliant CWM recovery.
Or if you already have the original CWM, you can get the most recent RA Recovery here. Just check the threads for the flash files.
http://forum.xda-developers.com/showthread.php?t=1459821
For CWM you will need to go to tegraowners.

Dear Sir
I have same problem with my tablet too for 4 months and I explained that HERE or HERE
and i followed all instruction in these 2 threads
http://forum.xda-developers.com/showthread.php?t=1572622
http://forum.xda-developers.com/showthread.php?p=24531880#post24531880
and I used from ECrom files created by Mr. Fguy ver 4.03-22 and 3.2.1 but my problem is Lasting yet
can you help me?
you had same problem and you know how bad is a bricked tablet in your hands
thank you and GOD bless all of you
[email protected]
[email protected]

darvis said:
Dear Sir
I have same problem with my tablet too for 4 months and I explained that HERE or HERE
and i followed all instruction in these 2 threads
http://forum.xda-developers.com/showthread.php?t=1572622
http://forum.xda-developers.com/showthread.php?p=24531880#post24531880
and I used from ECrom files created by Mr. Fguy ver 4.03-22 and 3.2.1 but my problem is Lasting yet
can you help me?
you had same problem and you know how bad is a bricked tablet in your hands
thank you and GOD bless all of you
[email protected]
[email protected]
Click to expand...
Click to collapse
I don't have the tablet anymore, it was a friend one, I can help you with your big problem because really it was easier than I thought, you can PM me with all the details, and yes the flu is a big problem... =P

Problems with opening up settings to turn on usb debugging
Hi Travisantonio,
I have a question:
Did you have any problems opening up the settings when you were on the black "android system" screen?
My touch screen is completely unresponsive at the moment.

Maybe I didnt read or understand everything but with my tab USB view didnt give me my ID or it wouldnt work. Got into ADX mode but couldnt get things working. Tried ADB to list devices and would never list anything. I heard my computer beep when I would hook it up but couldnt really do or complete anything. I couldnt get the DOTNETDETECTOR (PBJUPRADE_ to work. Tried A500 APX flash utitlity. Tired nvflash and falied. Guess I should list more information but at this point I tried so many things to recover dont remember the order I did things. I originally tried to upgrade to a Rom but all things failed and actually not sure what ever got completed. Only thing I could tell my tab did besides black screen was the power button either was white(some type of one) or orange.

This helped me to recover my bricked Acer 500 tablet after a failed ICS upgrade. The Acer update seemed to go okay, but on reboot it froze at the Acer logo and had an error in the corner. Every reboot or button/reset resulted in this. It would not recover or do anything else. I was able to get the USB device ID /serial number using the USB deview 64 program in the usb folder. There were several entries for the tablet but only one had a usable number (bottom right line at the end). Then the tool wiped the tablet and reloaded 3.2.1 and booted to factory new. Thanks for the instructions and to all the other XDA-ers for the tools. I am now on ICS properly.

Trying to recover a bricked acer a500, I just have a black screen on boot with no boot logo, vibration or letters or words on the screen
trying to enter recovery/update mode doesnt work
Im up to the step where is says put in your UID into the program
Just go to USB tools and use USBdeview, and is done...
Click to expand...
Click to collapse
I did this and found the device but where exactly is the UID located?
looking at other threads, the serial number is the UID however the serial number entry is blank for this device

Joey22688 said:
Trying to recover a bricked acer a500, I just have a black screen on boot with no boot logo, vibration or letters or words on the screen
trying to enter recovery/update mode doesnt work
Im up to the step where is says put in your UID into the program
I did this and found the device but where exactly is the UID located?
looking at other threads, the serial number is the UID however the serial number entry is blank for this device
Click to expand...
Click to collapse
this method is total overkill for your situation....
how did u get yr tab like this???
if u have total black screen - is the power button lite on?????
what bootloader version are u on
have you had a custom recovery on there
to get your cpuid follow the first link to a guide in my signature - you need to follow steps in the guide if you have any probs then post in the guide thread

the previous owner said he tried to install a custom rom and I think it crashed and this is the result
the power light turns on (white)
if I just power it on, the backlight turns on however its just a black screen, nothing else happens
apx mode seems to be the only thing working right now, I thought this method would be my only chance to get the recovery mode working again
I dont know anything else about the tablet, bootloader ect...

Joey22688 said:
the previous owner said he tried to install a custom rom and I think it crashed and this is the result
the power light turns on (white)
if I just power it on, the backlight turns on however its just a black screen, nothing else happens
apx mode seems to be the only thing working right now, I thought this method would be my only chance to get the recovery mode working again
I dont know anything else about the tablet, bootloader ect...
Click to expand...
Click to collapse
ok thats cool, apx mode works!!!
well try this first - using hard reset:
1) Turn off your tablet,
2) Rotation lock on your left;
3) Press Vol Up closest to rotation lock and power on simultaneously
4) As soon as the tablet vibrates you can release the power button and you should start to switch rotation lock left and right till you see
Erasing Userdata...
Erasing Cache...
Vol Up is still pressed;
5) The tablet starts to format
6) Your tablet will be as clean as it can be.
otherwise plan B!!!
do u know whether tab was running HC or ICS?
u need some package files and a flash tool either apxflash or nvflash
if u start the tools and then connect your tab via usb cable to your pc
there are links to guides in my sig
my cpuid guide shows u what u need and where to get it, info about your cpuid too and drivers - altho you wont need to worry too much seeing as youre in apx
civatos guide has all the links to the packages and all the info you need to patch the bootloader, then you can flash one of the ics roms and youre all good!!!
the process is simple enough - but if you get it wrong it can be frustrating as heck!!!!

tried that method, get no vibration, devices just turns on to the black screen like normal
the only problem right now, I cant retrieve the uid
adb
when I type adb devices, nothing shows up
A500 manager
tried to the use the uid retriever tool however it just stays blank, same for the bootloader
it says it detects the A500 in apx mode
usbdevice view
shows no serial number for this device
I see there is a A500 motherboard on ebay (cant link to outside links...)
"Acer Iconia A500 Tablet Replacement Parts - MainBoard - 32GB MB, H6000 001 PBJ20"
"Complete with Android 4.x installed, 32GB memory and ready to install and boot."
could I get that and just replace the whole mobo and it will work fine?

Joey22688 said:
tried that method, get no vibration, devices just turns on to the black screen like normal
the only problem right now, I cant retrieve the uid
Click to expand...
Click to collapse
OK just clarify - black screen, that is, nothing at all displayed AND Power Light ON??
IF u r in apx mode then
U have a couple of options
EUU flash back to HC 3.2.1 or
apxFlash to ICS
Everything you need for doing this is in my cpuid guide link in my sig.
open apxflash tool do not connect your tab Yet
Go as far as the enter apx mode
Now connect your tab to yr pc
Windows should install apx drivers
Once installed. try clicking blue arrow first
If u don't see the do u want to flash window then
You'll need to click on the "enter apx mode " button instead then
Click blue arrow
Hopefully the PC and tab are feeling pretty friendly and decide to take each other on
The tab should flash the bl and install recovery.....u should be good to go from there!!!
EDIT you can try cmd prompt on nvflash folder
Run a500.bat or.bat file that should kick you to bootloader mode
its really important that your screen display something in white letters!!
Entering Acer download mode OR
Entering apx mode
The flash will fail if u don't see something like this. This holds true for all methods
I see there is a A500 motherboard on ebay (cant link to outside links...)
"Acer Iconia A500 Tablet Replacement Parts - MainBoard - 32GB MB, H6000 001 PBJ20"
"Complete with Android 4.x installed, 32GB memory and ready to install and boot."
could I get that and just replace the whole mobo and it will work fine?
Click to expand...
Click to collapse
Wayyyy outta my league m8. Sum1 else will know....

yes, its just a black screen, no vibration, no boot logo, no letters or words on the screen, backlighting for the screen is on, and the power light is on
when I press the blue arrow in a500 apx flash tool it asks me for my SBK, going to that generator site it then asks for my UID which I cant retrieve

Joey22688 said:
yes, its just a black screen, no vibration, no boot logo, no letters or words on the screen, backlighting for the screen is on, and the power light is on
when I press the blue arrow in a500 apx flash tool it asks me for my SBK, going to that generator site it then asks for my UID which I cant retrieve
Click to expand...
Click to collapse
if you do not have your cpu id and
if you do not have access to adb and
you're stuck in apx mode
then things are looking grim.....
the only way to get into your tab without yr cpuid is fastboot
but you need adb working for that
someone else was stuck in apx mode a day or two ago, try a search...maybe...

I'm sorry guys I was a little off of this thread .
I will be glad to help you guys to get your UID or any problem that you have even though I don't have the Tablet anymore.
Thanks for all and God bless you all.
dibb_nz said:
if you do not have your cpu id and
if you do not have access to adb and
you're stuck in apx mode
then things are looking grim.....
the only way to get into your tab without yr cpuid is fastboot
but you need adb working for that
someone else was stuck in apx mode a day or two ago, try a search...maybe...
Click to expand...
Click to collapse
There is no way to fastboot the tablet in that mode, the only way is to get the UID and then decode it and NVFlash the Bootloader after it is done then put ICS or HC and the EC_ROM files and the tablet will be working again.

I'm gonna throw in the towel and just buy a new mobo for cheap, it seems im screwed without the UID and cant retrieve it either
I wish the previous owner would have gotten the UID beforehand
thanx for the all the help though

Joey22688 said:
I'm gonna throw in the towel and just buy a new mobo for cheap, it seems im screwed without the UID and cant retrieve it either
I wish the previous owner would have gotten the UID beforehand
thanx for the all the help though
Click to expand...
Click to collapse
Sent from my A500 using xda premium
Just come across this check here: /sys/firmware/fuse/acer_cpuid

dibb_nz said:
Just come across this check here: /sys/firmware/fuse/acer_cpuid
Click to expand...
Click to collapse
What do I exactly do?
I dont have any access to the devices files and do not have a dump

[Q] Probelm installing v3 bootloader/recovery

I'm having a problem using the following guide, and I can't seem to find anyone asking the same question...
http://forum.xda-developers.com/showthread.php?t=1622425
Following all the instructions, at step 3 in the directions, I get all the info from checking my SBK number, however the last two lines read: file not found bootloader.img, command failure bootloader download failed.
As there was no bootloader.img and I couldn't find any info on such a file, I pushed ahead, thinking this was common.
I can get into APX mode without issue, its the following steps where I seem to have a problem.
Using the first method listed in step 6, I am never prompted with a "press any key to continue", it just launches straight into attempting the install, and freezes installing (I forget the exact file name but I believe it's the bootloader, it is right in the beginning) it stalls at 131702/78908 (I think those numbers are right)
Using blackthun3r's tool renders the same result. I've tried everything can't figure it out.
I am on a stock 033.00_PA_CUS1 rooted using blackthun3r's tool, which worked perfectly...
Also, I never see the tab entering download mode when in APX it just sits with a black screen.
Anyone have any clue where I'm going wrong here?

Are APX/Download mode drivers installed properly
killdevilfalls said:
I'm having a problem using the following guide, and I can't seem to find anyone asking the same question...
http://forum.xda-developers.com/showthread.php?t=1622425
Following all the instructions, at step 3 in the directions, I get all the info from checking my SBK number, however the last two lines read: file not found bootloader.img, command failure bootloader download failed.
Click to expand...
Click to collapse
the most important thing at step 3 is having the tool "see your uid" the rest...dont worry about.....
I can get into APX mode without issue................
............Also, I never see the tab entering download mode when in APX it just sits with a black screen.
Click to expand...
Click to collapse
ok, you must ensure the apx/download mode drivers are installed.
For your tab to enter download mode it needs the apx drivers...you should see the windows new hardware wizard installing them, and check out the guide again there's a picture of where to look for them in Device Manager....
Yes APX mode is a black screen AND the white led is lit on the power button.
with the apx flash tool, did you install the .apx files from the guide?
thats about all i can offer, dont know anything about step 6.
just make sure u have the boot/recovery aka apx aka download mode drivers installed and installed correctly...good luck

Right Driver
The driver listed when I connect the device in ATX mode is "Acer USB Boot-recovery driver"... is this the correct ATX driver or is there another, as the image shows "Acer Picasso USB-Boot-recovery driver"

killdevilfalls said:
The driver listed when I connect the device in ATX mode is "Acer USB Boot-recovery driver"... is this the correct ATX driver or is there another, as the image shows "Acer Picasso USB-Boot-recovery driver"
Click to expand...
Click to collapse
That, is a very good question!!! I dont know whether there is a dedicated APX driver or whether its a generic term for the 'Picasso' drivers as seen in the image.
All I know is that if these 'boot/recovery' Drivers are not installed then the flash wont work. Keep in mind too, that these nvflash methods are fairly new to most of us, so we're all on a steep learning curve -
I'd suggest going thru the process again, write out each step in your own words if you need to, and take your time - it can be difficult relating the instructions your eyes see on screen with what your fingers are tapping out on the keyboard AND having your head trying to make sense of it all!!! Pick one of the methods, it doesn;t matter which, and stick with it - switvhing between 2 or more can make things even more confusing....
I;m about to go on try civs method now, will let u know how i go
***************************************
UPDATE
steps 1-2-3 check
on getting into apx mode noticed driverrs didnt install
but checked dev man and they were listed as Acer not picasso
ran nvflash
entered 1
entered sbk
command window says nvflash starting.......
that was it couldnt get any further....no entering download mode on tab
uh-oh -
***************************************

Yes- there is a dedicated APX Driver
***************SUCCESS***********
What a mish!!!! Got it going on the 5th time.....flashing r14 as i write...woohoo!
If I knew how to post images then I would...took screenies all the way thru.
Reinstalled all drivers after the first fail.
On next start found new hardware wizard wanted to install drivers for APX!!!!
I have never seen that before
After poking around a bit got them installed with...wait for it...under adb???
They installed as Acer "FastBoot Interface".....
It never showed in my system tray or as Picasso USB etc....in dev man
my next try failed again....waiting for tab to enter download mode......
For my last go at for the nite I bbutton comb'ed to APX first a
nd connected cable 2nd.....within a minute or two Acer Logo on tab
followed by :"entering download mode....within 10 mins I was good to go......
All I can tell you is to keep trying till u get it!!!!!

Probelm installing v3 bootloader/recovery
I have the same problem tried everything your not the only one.

shenny585 said:
I have the same problem tried everything your not the only one.
Click to expand...
Click to collapse
Driverz reinstall them......each time u attempt a flash and it fails at some point, you must reinstall them.
After poking around a bit got them installed with...wait for it...under adb??? They installed as Acer "FastBoot Interface"..... It never showed in my system tray or as Picasso USB etc....in dev man my next try failed again....waiting for tab to enter download mode...... For my last go at for the nite I bbutton comb'ed to APX first a nd connected cable 2nd.....within a minute or two Acer Logo on tab followed by :"entering download mode....within 10 mins I was good to go....
Click to expand...
Click to collapse
If they don't show up in either device manager (under adb/apx or USB controllers) or the system tray "safely remove h/ware then they are not installed, if u continue with flash and it fails then u have to reinstall Acer drivers again!!!
install a500 boot manager u can check for a proper connection with this tool....
See link in my sig for a pictorial showing step by step instructions for using apxflash tool
If this still does not work then post back with the following:
What rom and bootloader u have now or began with
What rom u installed at step 4
R u rooted and do u have a custom recovery installed
On validating yr sbk, at step 3, the most important thing here is to see the system info in the command window,
Boot.img errors u see at the end IS A NORMAL PART OF THE VALIDATION in other words its what you're supposed to see. Correct me if I'm wrong but at that command window aren't u supposed to type: go

[Solved] Mystery bricked tablet. Black "android systems" screen

I bought an Acer a500 tablet a few days ago not knowing how broken it is.
After loads of research and attempting different techniques I still haven't had any progress.
The software issue:
When booting up the tablet, it goes to the black screen with "android system" at the top and power off/ shutting down in the middle of the screen.
Fixes I've tried:
1.
Since I don't know anything about what operating system is on this tablet, I have been blindly flashing different "stock" (from Vache) versions of HC.
--The android logo with gears shows up, the green bar loads but freezes when it gets 1 cm away from finishing.
--After turning off the tablet and booting it up again, "updating bootloader shows up on the upper left hand corner of the screen. Then a message pops up saying "apk installer: all pre processes complete". Then it returns to the black screen.
2.
The tablet will not go into apx mode (using the reset botton at the bottom).---Fixed. I didn't execute the steps properly. Apx mode works fine.
3.
I plugged the tablet into an older windows laptop and the computer could not install the correct drivers to sync with the tablet. Again also my lack of knowledge. I installed drivers from Acer.com
4.
These two guides seem to be exactly what my problem is but I can't seem to make sense of them:
http://forum.xda-developers.com/showthread.php?p=24531880#post24531880
http://forum.xda-developers.com/showthread.php?t=1572622
This is as far as I've gotten.
Other complications:
--The battery is dead. I have to use it while plugged in by the charger.
--Most of the thread that I have looked at use Megaupload as the source of downloading their files.
--The original owner of the tablet will not help me out. As I stated before, I don't know what version android OS was on here before it was bricked and on top of that the original owner won't answer my questions. As far as I know though, this tablet is not rooted or has anything "non-OEM" installed in it. The story goes that this tablet was bricked when the owner tried to "update" it. Before that, it was functioning perfectly.
-----It looks like Darvis is having the same issue and frustrations I'm having but reading his threads makes me think that this tablet is a dead end.
http://forum.xda-developers.com/showthread.php?t=1427983&page=4
http://www.androidtablets.net/forum...32467-please-help-me-unbrick-my-iconia-5.html
If someone could point me in the right direction toward fixing this tablet, I would appreciate it very much.
Thank you for reading my Thread.

KiwiN said:
http://forum.xda-developers.com/showthread.php?t=1572622
Click to expand...
Click to collapse
First off......I hope u didn't pay much for the tablet.
Secondly the guide above looks pretty straight forward but maybe this is one of the ones that has files at megaupload?
I know that the ra recovery and timmydean's files are accessible as I have downloaded both of them.
Maybe someone who has done this previously will chime in and get you the other file if it is indeed unreachable.
Sent from my A500 using xda premium

I would suggest trying to connect the tab to a Windows 7 PC after installing the USB drivers from ACER. Then check if your device appears in the device manager. As long as you have its UID you can flash the tab from the PC with one of the EUU tools - check my signature on "how to revert to 3.0.1" or TimmyDean's thread which offers an EUU with rooted HC 3.2.1 (it's linked in my thread as well).
How exactly did you try to get into APX mode?
p.s. I have the EUU files if you can't access them from the threads links. I can send them to you.

getting into apx mode
When I perform the steps (hold reset + power for 3 secs then release power); the tablet turns on as it usually does. It goes to the Acer screen, then android and back to the black home screen. My computer responds by saying that it is "installing drivers" but it "fails to install drivers". At the same time I have the DND.exe open and it does not recognize my tablet.
I'm trying to follow the instructions from the root 3.2.1 v4 file.
I can't perform the first step where it instructs me to turn on Usb debugging. The problem is that I can't open the settings by clicking the clock. Nothing happens.
I realize that one complication of my tab is that it will not charge. The battery power is below 15% so none of these fixes might not be effective for me. That might be the ultimate problem?
CyaN1de-
I paid $100 for the tablet. As of this moment I feel like I paid too much.
Thank you both for you quick replies. I have to say that most of the problems that I'm having is because of my lack of experience but I'm learning. I hope I fix this tab soon.

if this dont fix it, i'll give you what you paid for it;0
someone posted a while back that a hard reset fixed the android systems screen error
not sure where you're at now but no harm in trying it
Try using hard reset:
1) Turn off your tablet,
2) Rotation lock s to your left;
3) Press Vol+ (which is next to rotation lock) and power on simultaneously
4) As soon as the tablet vibrates you can release the power on button and you
should start to switch rotation lock left and right till you see
Erasing Userdata...
Erasing Cache...
Vol+ is still pressed;
5) The tablet starts to format
6) Your tablet will be as clean as it can be.

Thanks for the suggestion but I didn't accomplish anything by hard resetting it. I've done this many times and nothing has changed.
I haven't given up on unbricking this tablet yet and even though it's frustrating I'm learning from the process. If I decide to sell it, I'll contact you Dibb.

KiwiN said:
.....
When I perform the steps (hold reset + power for 3 secs then release power); the tablet turns on as it usually does. It goes to the Acer screen, then android and back to the black home screen. My computer responds by saying that it is "installing drivers" but it "fails to install drivers". At the same time I have the DND.exe open and it does not recognize my tablet.
Click to expand...
Click to collapse
i've seen the 2 methods u described but i've not seen anyone else have success with it apart from the OP'ers - seems OTT to me but hey if it works for ya...
I've used timmydeans method ALOT on HC it never failed to work and that includes reverting back to HC from ICS - if it doesnt work for your issue then id be tempted to use blackthund3rs APXFlash Tool and civato's HC_ICS_Bootloader zip to flash a new bootloader and rom package on yr tab - but for the moment we'll run with td'sv4 - if drivers fail to install then believe me, its a good sign
try this:
I know you-ve probly done it but u need to do it again:
reboot everything, then reinstall acer drivers (yeh i know)
fire up ya tab but dont connect to yr pc just yet -as you said you
doubt usb debugging in enabled so we'll try another way around it
run the prgb20.exe it will scan for the new image but not find it becos youre disconnected...thats good....
after maybe 5 -7 minutes of scanning for the new image - it will show a
window "cannot detect yr iconia tab"
and instructions for getting into apx mode - go ahead connect usb put the tab into apx BUT don't click next until....
the drivers will try to install, dont let windows search but let me choose
(off memory) choose device and adb or android ph should show up here
the acer boot/recovery drivers should install...maybe even under USB Controllers
once they do and only when they do click next to put tab into:
acer download mode.......
as i said this is worth a go,,,,how about the update.zip have u tried that.....
else the only other way i know is apx flash....ya still need to get into apx
mode and if u cant then ???? sometimes youll try something over and over
and then out of the blue it will work...you'll swear you never did anything different , it jsut worked this time.....
hope you find some joy

Thanks Dibb for your words of wisdom. I've put it aside for now but I'm going to pick it up in the morning.

As addition to what dibb_nz said - Windows 7 would do the trick - I'm almost 100% sure you'll be able to connect in APX mode with the drivers properly installed. Then use one of the EUUs.
Drained battery really looks like the ultimate problem now because as far as I know you cannot charge the tab in APX mode - haven't tried that. Eventually I would suggest to crack the tab open, remove the battery and charge it somewhere - I don't know alternative ways but...may be another tab or you own charger with proper connector ...
http://www.youtube.com/watch?v=xvXihNIdQ1M
p.s. 15% power ... seems enough to flash through the PC...but who knows - don't waste them and get everything you need before starting the procedure.

no probs m8 hope u have better luck tomorrow
if u wanted to try the EC method i have those files if you want them
good luck m8

dibb_nz said:
if drivers fail to install then believe me, its a good sign
try this:
I know you-ve probly done it but u need to do it again:
reboot everything, then reinstall acer drivers (yeh i know)
fire up ya tab but dont connect to yr pc just yet -as you said you
doubt usb debugging in enabled so we'll try another way around it
run the prgb20.exe it will scan for the new image but not find it becos youre disconnected...thats good....
after maybe 5 -7 minutes of scanning for the new image - it will show a
window "cannot detect yr iconia tab"
and instructions for getting into apx mode - go ahead connect usb put the tab into apx BUT don't click next until....
the drivers will try to install, dont let windows search but let me choose
(off memory) choose device and adb or android ph should show up here
the acer boot/recovery drivers should install...maybe even under USB Controllers
once they do and only when they do click next to put tab into:
acer download mode.......
hope you find some joy
Click to expand...
Click to collapse
So I went through all these steps and the TD's V4 tool finishes updating the tab. But then it continues to the same black, android systems screen. And afterwards the tablet won't connect with the computer.
I am currently downloading the update.zip so i'm going to see if that will work.

KiwiN said:
So I went through all these steps and the TD's V4 tool finishes updating the tab. But then it continues to the same black, android systems screen. And afterwards the tablet won't connect with the computer.
I am currently downloading the update.zip so i'm going to see if that will work.
Click to expand...
Click to collapse
do u get on yr tab the big 'PASS' in white leetters or "entering download mode" at all???
think we're beyond update.zip if EUU failed but you can try it -
you can get to apx which is a start - getting a new boot/recovery image on there is the main priority I think...as i posted earlier i've only ever seen a fix for this problem work for 2 people, so on new ground here....
But anyway check out the APXFlash method/walkthru in my sig....all the info is in there and the links to the required files ....do we know if you're on HC or ICS B/L????

I got the word pass; now using recovery mode to flash a rom.
not sure which bootloader I have.
I am using:
Acer_A500_7.006.01_COM_GEN2: http://vacheandroid.com/files/Acer_...1_COM_GEN2.zip
But after it says install from sdcard complete it also give me the message:
E: Can't mount/ dev/block/mm....
E: Can't mount Cache: recovery/log
E: can't mount open cache: recovery/log
E: Can't mount /dev/block/mm...
found this:
dibb_nz said:
yes if you're talking about the stock roms from vaches thread, you need the full rom package - you cant just use an 'update' package as they need a full rom to work properly....
for instance my original HC3.2.1 Stock build is 7.014.15_COM_GEN1
and theres no FULL Rom for 3.2.1, so i have to use the HC 3.2 FULL instead
.....Acer_A500_7.006.03_COM_GEN1.zip
Once flashed, thankfully I recieve the 2 small OTA Updates to get up to 3.2.1 again
Another couple of days the ICS OTA d/l'ed and installed with no probs....
is that clearer or am i making things worse????
Click to expand...
Click to collapse
What I've learned from this whole process is that all of the obstacles I'm facing are due to my lack of knowledge. Thanks for sticking with me Dibb. I can't thank you enough.

KiwiN said:
When I perform the steps (hold reset + power for 3 secs then release power); the tablet turns on as it usually does. It goes to the Acer screen, then android and back to the black home screen.
Click to expand...
Click to collapse
I could never get mine into apx mode with the usb cable plugged in. So try that if you haven't. And it is literally hold reset, then press power, without letting up on the reset, release the power button after 3 seconds (use a watch or timer!) then one more second before you release the reset... It does work, but the timing has to be close. It must have a tenth of seconds or less tolerance. Very picky... I've done it on 2 different a500s so far and I am heading to do another tonight. If it doesn't work I'll be right back!!!

KiwiN said:
I got the word pass; now using recovery mode to flash a rom.
not sure which bootloader I have.
I am using:
Acer_A500_7.006.01_COM_GEN2: http://vacheandroid.com/files/Acer_...1_COM_GEN2.zip
But after it says install from sdcard complete it also give me the message:
E: Can't mount/ dev/block/mm....
E: Can't mount Cache: recovery/log
E: can't mount open cache: recovery/log
E: Can't mount /dev/block/mm...
found this:
What I've learned from this whole process is that all of the obstacles I'm facing are due to my lack of knowledge. Thanks for sticking with me Dibb. I can't thank you enough.
Click to expand...
Click to collapse
Hi m8 Hwya goin - just got home - what's the lay of the land???
Holey motley we just had a good shake....thort was gonna carry on thank fk it stooped, phew, just been awhile since we had one like that, scary
Crikey just as I finished typing "....land"
Back to more important matters..... whr u at m8????

None of the roms I've tried to flash go to completion. I'm stuck at trying to flash different roms from recovery mode. Not much luck with what I've tried but I'm going to try more before I give up.
Are there any particular roms I should try more than once?
Or why am I getting the "error" messages stated earlier?

KiwiN said:
None of the roms I've tried to flash go to completion. I'm stuck at trying to flash different roms from recovery mode. Not much luck with what I've tried but I'm going to try more before I give up.
Are there any particular roms I should try more than once?
Or why am I getting the "error" messages stated earlier?
Click to expand...
Click to collapse
recovery mode???
u need a new boot and recovery image on that thing
the HC EUU based flash arent working even tho u got a PASS on screen after TDv4
So HC based methods arent up to it. You need nvflash/fastboot.
We need ICS with the unlocked bootloader it has access to another level below where HC worked because HC b/l is and always has been locked down.
If ICS cant fix it, I have no idea what will and my offer to buy is off the table!!!!
check out civatos guide and ready yourself for nvflash via zip files in that post or blackthund3rs APXflash tool, with a complete tutorial for using it, all links in my sig.
good luck

Just to chime in with a tip on getting google drivers to work.
When getting any device not recognized, or driver error, generally I go into windows device manager, select the unknown or offending device, update driver, only I choose which driver to use, and ignore the error message where it says "may not be compatible with your device", and use it anyhow.
I get that occassionally when swapping back and forth between devices.
Also, battery not charging and display errors, are usually a sign of EC Power control. So you were on the right track about that. Once you get a rom up and running, if the batt don't charge, then there are some EC flash's you can do from CWM.

Back at it again using BT's nvflash tool. And tablet is still bricked.
I've tried a few different bundles and none allow me to operate the tablet. Everything goes smoothly and I get "pass" at the end of the process. When I go to reboot the tablet, it gets stuck at the black start up screen.
Found another lead: http://forum.xda-developers.com/showthread.php?t=1579490
Sounds like he was in the same situation as I am but has a bit more skills and knowledge dealing with problem solving.

You say you were able to flash roms. So apparently recovery is working OK. Have you tried flashing civato's flexreaper? It has code that will detect whether you bootloader is HC or ICS. You may just be flashing a rom that doesn't match your bootloader... I know I'm jumping into the middle of this, but it's just a thought.
Also, when you did the hardware reset with the rotation lock switch did you get the confirmation that it was, in fact, being wiped?
Failing all that, I'd be willing to take it off your hands for spare parts...
Sent from my A500 using Tapatalk 2

[Q] A500 cannot retrieve CPUID in APX

I have followed many threads but cannot find a working solution. I will outline what I have done as briefly as possible.
While streaming to TV with HDMI, the screen switched to the android robot on his back with red triangle and "!".
I put Acer_A500_1.031.00_WW_GEN1 on a SD and tried to reboot, showed robot working and then on back with "!" again.
Put in fastboot and used ADB command lines to try to put Thor recovery on, stated device locked on screen.
Entered cmd to unlock, got positive response, tried thor again, same result.
powered down, re-installed asus drivers, connected it did not connect as APX so rolled back drivers and was able to connect as APX.
Ran AFTEROTA, cannot find device
Ran Blackthund3r manager, stated a500 connected in APX mode, but when trying to get Serial program runs but returns nothing. And when trying to get logs returns "no device found" but at the bottom still shows connected in APX Mode.
I am unable to get the CPUID and the device does not boot for me to put in USB development mode so I am unsure where to go from here. Again I have spent several hours following everystep in multiple threads and I keep getting stuck. Any help in helping me return my A500 to working condition would be great. Also, before crash I was running ICS OTA stock.
v/r

i also have the same problem & also try almost everything of what you did but mine is not rooted a virgin tablet running on latest ics . i can also get into apx mode but cannot generate the uid.. i know there is a solution to this using ubuntu but i dunno how to use ubuntu or libusb or visualc+ as what it stated to generate the uid & was hoping that some1 might try to make a step by step thread in using linux or winusb in windows

NavyRazorback said:
I have followed many threads but cannot find a working solution. I will outline what I have done as briefly as possible.
While streaming to TV with HDMI, the screen switched to the android robot on his back with red triangle and "!".
I put Acer_A500_1.031.00_WW_GEN1 on a SD and tried to reboot, showed robot working and then on back with "!" again.
Click to expand...
Click to collapse
so u flashed stock ICS (or tried to) - doing this overwrites your custom recovery with the silly stock one
Put in fastboot and used ADB command lines to try to put Thor recovery on, stated device locked on screen.
Click to expand...
Click to collapse
???? huh!!! do u have the unlocked bootloader????
what rom were u running before u flashed stock???
you were on the right track with fastboot if you'd tried that first rather than flashing a stock rom (for future ref!)
Entered cmd to unlock, got positive response, tried thor again, same result.
Click to expand...
Click to collapse
what is this unlock thing, sorry for my ignorance, but I've noticed a couple of reports lately that mentions this problem??
powered down, re-installed asus drivers, connected it did not connect as APX so rolled back drivers and was able to connect as APX.
Click to expand...
Click to collapse
I hope u meant to type "acer drivers"
unless you do have an asus tab....which then explains your troubles!!!!
Ran AFTEROTA, cannot find device
Ran Blackthund3r manager, stated a500 connected in APX mode, but when trying to get Serial program runs but returns nothing. And when trying to get logs returns "no device found" but at the bottom still shows connected in APX Mode.
I am unable to get the CPUID and the device does not boot for me to put in USB development mode so I am unsure where to go from here. Again I have spent several hours following everystep in multiple threads and I keep getting stuck. Any help in helping me return my A500 to working condition would be great. Also, before crash I was running ICS OTA stock.
v/r
Click to expand...
Click to collapse
heck you are in a bit of a pickle m8!!!
i think you can only use an update.zip (no cpuid required)
have a look at jdgM3NTL's thread " revert to factory stock the easy way" http://forum.xda-developers.com/showthread.php?t=1839313
IF this doesnt work you'll be in for the long haul - you will need to use linux as that is the only other way to get yr cpuid - have you checked out the cpuid thread (u only need to read the OP)
there are at least 7 different methods for retrieving yr cpuid, u might try usbdeview
---------- Post added at 11:05 AM ---------- Previous post was at 10:59 AM ----------
botzgori said:
i also have the same problem & also try almost everything of what you did but mine is not rooted a virgin tablet running on latest ics . i can also get into apx mode but cannot generate the uid.. i know there is a solution to this using ubuntu but i dunno how to use ubuntu or libusb or visualc+ as what it stated to generate the uid & was hoping that some1 might try to make a step by step thread in using linux or winusb in windows
Click to expand...
Click to collapse
check out srbeens thread here http://forum.xda-developers.com/showthread.php?t=1751978
have you checked out the cpuid thread (u only need to read the OP) there are at least 7 different methods for retrieving yr cpuid
Click to expand...
Click to collapse
if you can still boot then method 7 for you

Thank you for your reply.
In response to some of your questions. Yes I meant to type Acer and not Asus, I do in fact own the Acer A500.
About my initial attempt to flash the stock ROM, I never had an unlocked bootloader, before the tablet was bricked I was running Stock ICS OTA and had never done any modifications.
I tried using USBDeview but the serial number is blank. It looks like I will have to try the Linux method. Again thank you for your help.

NavyRazorback said:
Thank you for your reply.
In response to some of your questions. Yes I meant to type Acer and not Asus, I do in fact own the Acer A500.
About my initial attempt to flash the stock ROM, I never had an unlocked bootloader, before the tablet was bricked I was running Stock ICS OTA and had never done any modifications.
I tried using USBDeview but the serial number is blank. It looks like I will have to try the Linux method. Again thank you for your help.
Click to expand...
Click to collapse
And this is WHY IM DONE following or using XDA THREADS. Most of the time someone experienced helps for a bit than leaves people hanging. I just unbricked my a500 when no one answered for my help. This guy here responded back and no o e help him. Hit and miss here. Go to another forum if you canr find your solution aleeady poSted. Cause if you reply or start NEW THREAD, no answer 90% time. Mine was bricked And rooted. Stuck on acer screen. Tried everything I could. No answers fron this sites threads. But I did it on my own, simple fix for apparent hard brick a500, but it was not really hard bricked. All symptons showed hard bricked. You wanna know what really fixed my tab without changing main board...?? Hint.. xbox red ring.....xda, you suck, no support for newbies here. Out. Unsubscribed..deuces. .

Cant Flash Custom Bootloader/Recovery on A500 (ICS OTA 4.0.3)

So ive been trying for almost a week now trying to put a custom ROM on my Acer Iconia A500, but my tablet doesnt want to do cooperate. I have tried EVERYTHING, from using blackthunders APXFlash tool to NvFlash and everything. My problem is my computer will pick up my tablet once its in APX mode. I go to my "Devices and Printers" and under everyting it has a picture of a object and under it, it says "APX". Also in the bottom right corner of laptop theres the "Usb" icon and if i click on it, it says "Eject APX", so i know my computer knows what it is. but no matter WHAT program i use, my A500 never gets any white text on it when its trying to go into the bootloader or anything. i can only get to the point where my device is in APX mode.Nothing seems to work AT ALL. And all the programs get to the point of trying to flash the bootloader and thats it. They just stop working or cant go any further for some reason. I also deleted my "boot.p" file in /system as well. I got my CPUID, i got my SBK, i got all of that using Afterota program. My tablet IS ROOTED. So im stuck right now. Tablet runs fine and good. Just dont wanna give up and really needing some help. Heres my tablet info:
Tablet Cpuid : 037C61C9408103D7
Tablet Sbk : 0xE4531F00 0x18070000 0xF74EE402 0x11DE2003
Android Build : Acer_AV041_A500_1.033.00_PA_CUS1
Bootloader : 0.03.12-ICS
I also tried downloading the "babsector.rar" file from the russian website and it says the file was removed, id SO GREATLY appericate it if someone who has it could re-upload it somewhere else or gimme a good working downloading link for it. One again please help me out if you have ANY suggestions or know how to fix my issue. THANKS

RECKLESS PAIN said:
So ive been trying for almost a week now trying to put a custom ROM on my Acer Iconia A500, but my tablet doesnt want to do cooperate. I have tried EVERYTHING, from using blackthunders APXFlash tool to NvFlash and everything. My problem is my computer will pick up my tablet once its in APX mode. I go to my "Devices and Printers" and under everyting it has a picture of a object and under it, it says "APX". Also in the bottom right corner of laptop theres the "Usb" icon and if i click on it, it says "Eject APX", so i know my computer knows what it is. but no matter WHAT program i use, my A500 never gets any white text on it when its trying to go into the bootloader or anything. i can only get to the point where my device is in APX mode.Nothing seems to work AT ALL. And all the programs get to the point of trying to flash the bootloader and thats it. They just stop working or cant go any further for some reason. I also deleted my "boot.p" file in /system as well. I got my CPUID, i got my SBK, i got all of that using Afterota program. My tablet IS ROOTED. So im stuck right now. Tablet runs fine and good. Just dont wanna give up and really needing some help. Heres my tablet info:
Tablet Cpuid : 037C61C9408103D7
Tablet Sbk : 0xE4531F00 0x18070000 0xF74EE402 0x11DE2003
Android Build : Acer_AV041_A500_1.033.00_PA_CUS1
Bootloader : 0.03.12-ICS
I also tried downloading the "babsector.rar" file from the russian website and it says the file was removed, id SO GREATLY appericate it if someone who has it could re-upload it somewhere else or gimme a good working downloading link for it. One again please help me out if you have ANY suggestions or know how to fix my issue. THANKS
Click to expand...
Click to collapse
First of all thanks for an informative post!! I wish everyone gave as much info as you One thing you didn't mention was which PC OS you are using - 32bit are best
My problem is my computer will pick up my tablet once its in APX mode. I go to my "Devices and Printers" and under everyting it has a picture of a object and under it, it says "APX". Also in the bottom right corner of laptop theres the "Usb" icon and if i click on it, it says "Eject APX", so i know my computer knows what it is.
Click to expand...
Click to collapse
Right, everything is in order here, you're seeing exactly what you are supposed to
So now we need to know "what" doesn't "work".
The babsector file is best for trouble shooting as it will always post some sort of output. Its in post2 of the root guide in my sig.
1. Put your tab in apx mode and connect your "micro usb cable" to your pc
2. Run the first .bat file of babsector.
Now what exactly happens next, can you post a screenshot?
Can't help much further until you do this!!
If the first .bat file runs ok, you need to boot directly to cwm which babsector has just flashed.
Do a nandroid backup and then
a complete wipe including /data/media - you need to go in and specifically enable this from the 'mounts' menu. Wipe davlik and cache too.
Now flash your custom rom and power down.
Back into apx mode and run the 2nd .bat file.
Reboot and voila! you should be all good - fingers crossed!!!

dibb_nz said:
First of all thanks for an informative post!! I wish everyone gave as much info as you One thing you didn't mention was which PC OS you are using - 32bit are best
Right, everything is in order here, you're seeing exactly what you are supposed to
So now we need to know "what" doesn't "work".
The babsector file is best for trouble shooting as it will always post some sort of output. Its in post2 of the root guide in my sig.
1. Put your tab in apx mode and connect your "micro usb cable" to your pc
2. Run the first .bat file of babsector.
Now what exactly happens next, can you post a screenshot?
Can't help much further until you do this!!
If the first .bat file runs ok, you need to boot directly to cwm which babsector has just flashed.
Do a nandroid backup and then
a complete wipe including /data/media - you need to go in and specifically enable this from the 'mounts' menu. Wipe davlik and cache too.
Now flash your custom rom and power down.
Back into apx mode and run the 2nd .bat file.
Reboot and voila! you should be all good - fingers crossed!!!
Click to expand...
Click to collapse
OK so when I put it in APX mode and connected to it, I ran the "A501 A" file and entered my SBK. But when I hit enter it will work just fine alllll the way up til it says something about sending file to bootloader, and then just fails. This is the SAME thing that happened when I use NvFlash and APXFlash! None of them can seem to access my boot loader and I never get anyway white text on my Acer saying it is! So idk what to do! I can't post any screenshots at the moment since I'm not home right now. I will once I get home. Also I can't even enter stock recovery on my tablet! I turn it off, and as its turning back on I hold the "Power" and "Volume Down" button, but just boots normally.....so Idk if this has to do with the problem or not....
Sent from my XT912 using Tapatalk

NEVER MIND GOT IT WORKING!!!!!! THANK GAWD. I just reinstalled the drivers and apx drivers and when i loaded up the a501 A file it sent everything correctly and smoothly! Now running a custom ROM! THANKS A MILLION!!!!!!!(;

Not for me =(
RECKLESS PAIN said:
NEVER MIND GOT IT WORKING!!!!!! THANK GAWD. I just reinstalled the drivers and apx drivers and when i loaded up the a501 A file it sent everything correctly and smoothly! Now running a custom ROM! THANKS A MILLION!!!!!!!(;
Click to expand...
Click to collapse
Well that sux because I thought we were on the same page, except you got it working. I get stuck on uploading the bootloader stage 2 in apx program.
Also when I try to load recovery.
It does a laying down android with a triangle and a exclamation point in it.
I found the cpuid from navigating to the android file folders.
0428004342e0e297 which converts to this
0xC7E2C201 0xDBFDC006 0xDB922404 0x44312103
Is there a way to verify that I do in fact have the correct one?
I really want to update my rom, but I don't know what I'm doing wrong.

vicviper74 said:
Well that sux because I thought we were on the same page, except you got it working. I get stuck on uploading the bootloader stage 2 in apx program.
Also when I try to load recovery.
It does a laying down android with a triangle and a exclamation point in it.
I found the cpuid from navigating to the android file folders.
0428004342e0e297 which converts to this
0xC7E2C201 0xDBFDC006 0xDB922404 0x44312103
Is there a way to verify that I do in fact have the correct one?
I really want to update my rom, but I don't know what I'm doing wrong.
Click to expand...
Click to collapse
What I did was went to the Acer website and found my tablet and installed the HoneyComb driver that was right under my ICS firmware. (Since they didn't have any drivers for the latest ICS OTA 4.0.3) which these drivers will work fine. Next after I reinstalled those drivers I put my tablet in APX mode, connected it to my laptop. Made sure in the bottom right hand corner it had installed the APX drivers successfully and made sure under the usb icon it.said "APX". I then flashed the a501a file first and it went through and worked! Them from there I went to wipe what I needed and installed my custom rom!
Sent from my XT912 using Tapatalk

vicviper74 said:
Well that sux because I thought we were on the same page, except you got it working. I get stuck on uploading the bootloader stage 2 in apx program.
Also when I try to load recovery.
It does a laying down android with a triangle and a exclamation point in it.
I found the cpuid from navigating to the android file folders.
0428004342e0e297 which converts to this
0xC7E2C201 0xDBFDC006 0xDB922404 0x44312103
Is there a way to verify that I do in fact have the correct one?
I really want to update my rom, but I don't know what I'm doing wrong.
Click to expand...
Click to collapse
two tools in my root guide for sbk check and while you're there read up about the boot.p file if you ever want to get past the dead android screen, everything is explained in the first post