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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
So apparently, I went home and usually put my phone into my desk.
While I took it from my pocket, I noticed the hardware buttons were lit but no display, I removed the battery to restart, during the week, frozen screen were occurring a dozen times when playing Clash, that though I didn't mind I just said to myself I will reflash the rom in the weekend.
But up to now,
It won't turn on, recovery mode or anything also doesn't work
It wont charge
Tried a new battery but still no luck
I think PC reads it but SPFT wont
Any suggestion on how I can revive my phone?
Attached is the error I get from SPFT
I don't own the A120 anymore. That is almost similar to this, as you might know.
Anyway, as nobody has answered your question, I will try to help as much as I can.
Does it give you a haptic feedback(vibration) when you try to power on the device?
Are you saying that it won't turn on completely?
If it is being detected on the computer and not on SPFT, you might want to check with the drivers you have. Do you have the MTK VCOM drivers installed? (I'm not really sure about the name, but it was something like that).
And try flashing the Stock ROM with SPFT with your battery removed from the phone.
Download the drivers.
Connect your phone without the battery and keep your device manager open, if it shows a device with a yellow exclamation mark beside it, right click and click on properties. You will have to do this quickly.
Once that is done, go to driver tab on the properties window. Select Update Driver. Browse my computer and enter the location of your downloaded and unzipped drivers.
(You might get a digital signature error or something similar. I'll tell you how to bypass that in the end. If you get that, go to the end, follow those steps and then come back and do all the steps after the downloading part.)
If the drivers are successfully installed, then unplug your device, run the SPFT and load the Scatter file of the Stock ROM.
Now select Download only and start the download, it will wait for you to connect the phone.
Plug in your phone without the battery. This should initialize the download process.
Now wait for the flash to be completed and if it is successful, take out your phone and boot it. If it boots up, congratulations.
If it does not, flash the same ROM the same way another time and check, if it is still not working, try with Firmware upgrade mode, twice. It should work in those tries.
Digital Signature Error bypassing.
I know only one method which works on Windows 8 and above(Tested).
Hold the Shift key while pressing Reboot.(Yes, you have to reboot your PC)
Once there is a blue screen with options, you should see "Troubleshoot". Select that.
Then Advanced Options and then Start Up settings. Then press Restart.
This will show you a menu with a lot of options. Select the option number which says "Disable Driver Signature Enforcement".
This will log you into the PC normally, but now, you can go back and do all the steps again and you won't get an error.
Cheers!
If this still doesn't help you, let me know on what happens so I can try to get you back your phone. Hope this helps.
WalterWh1te said:
I don't own the A120 anymore. That is almost similar to this, as you might know.
Anyway, as nobody has answered your question, I will try to help as much as I can.
Does it give you a haptic feedback(vibration) when you try to power on the device?
Are you saying that it won't turn on completely?
If it is being detected on the computer and not on SPFT, you might want to check with the drivers you have. Do you have the MTK VCOM drivers installed? (I'm not really sure about the name, but it was something like that).
And try flashing the Stock ROM with SPFT with your battery removed from the phone.
Download the drivers.
Connect your phone without the battery and keep your device manager open, if it shows a device with a yellow exclamation mark beside it, right click and click on properties. You will have to do this quickly.
Once that is done, go to driver tab on the properties window. Select Update Driver. Browse my computer and enter the location of your downloaded and unzipped drivers.
(You might get a digital signature error or something similar. I'll tell you how to bypass that in the end. If you get that, go to the end, follow those steps and then come back and do all the steps after the downloading part.)
If the drivers are successfully installed, then unplug your device, run the SPFT and load the Scatter file of the Stock ROM.
Now select Download only and start the download, it will wait for you to connect the phone.
Plug in your phone without the battery. This should initialize the download process.
Now wait for the flash to be completed and if it is successful, take out your phone and boot it. If it boots up, congratulations.
If it does not, flash the same ROM the same way another time and check, if it is still not working, try with Firmware upgrade mode, twice. It should work in those tries.
Digital Signature Error bypassing.
I know only one method which works on Windows 8 and above(Tested).
Hold the Shift key while pressing Reboot.(Yes, you have to reboot your PC)
Once there is a blue screen with options, you should see "Troubleshoot". Select that.
Then Advanced Options and then Start Up settings. Then press Restart.
This will show you a menu with a lot of options. Select the option number which says "Disable Driver Signature Enforcement".
This will log you into the PC normally, but now, you can go back and do all the steps again and you won't get an error.
Cheers!
If this still doesn't help you, let me know on what happens so I can try to get you back your phone. Hope this helps.
Click to expand...
Click to collapse
Thanks bro, but I already gave up and bought a new one because I badly need an android device for my mini accounts in CoC. Haha but I am till trying to revive my Rio during my free time, this has been my phone for 1 1/2 year..
Yes I am aware that Rio is rebranded A120, I also asked from CM12.1 and AOSP LP Wiko Rainbow threads and some suggested help. Tried all that but still same errors.
No, there's no response of any kind including vibration when turning on. Hmn, as per the drivers, I've been using Tinno Driver since the jelly bean era of this phone, no problems or whatsoever from jb to kk to lp using that driver, so I thought there would be no problems. Still no luck in getting success. Using different versions of SPFT, using sp flashable Rio jb, kk, MMX A120 jb, kk, Wiko kk,lp stock roms, still no luck. Tried every port and cord. And I am using the Win7 64bit, I also resorted to MTK drivers, both the preloader and Da. Still.. No luck. Haha. I also tried, download only, format all+download, and firmware upgrade option with every possible combination from above but no success..
Thanks for your answer btw!
Hi all !
I have a Samsung A8 (model SM-A800F) which was working great. I ran Kingo Root to try to install Youtube ad free. The next time I restarted it, it didn't load, and restarted in an endless loop to where "Samsung" logo appears (then restarted again). I booted into System Recovery and chose to reset to factory, but it didn't help. Then I tried flash it using Odin in Download mode. I installed the Windows drivers, downloaded the 6.0.1 firmware for Vietnam (where it was purchased), loaded the file into the AP field, and once verified clicked Start. The progress was frozen when reaching mid-way every time I tried, until it said "an error occured while updating the device software. Use the Emergency recovery function in the Smart Switch PC software"...
I downloaded Smart Switch and installed in Windows, but the drivers were not able to install correctly, and failed on the component referring to the ID or something... while Modem driver was installed correctly and the phone appeared in Device Manager. Smart Switch didn't recognize my phone and said "unsupported device".
Now I cannot get the phone stay constantly ON, and the screen shuts down and loads in an endless loop, to the "Error occured" screen... When trying to boot to the ODIN Download page, it loads, I press UP for Continue, and then it again shuts down and loads to "Error Occured".
I tried to charge over night but it didn't help. It does the same thing when the phone is connected to the charger...
However it seems that by IMEI it is sill under warranty. I'm not sure if I voided it :/
Here's what the Download mode page says:
ODIN MODE
PRODUCT NAME: SM-A800F
CURRENT BINARY: Samsung Official
SYSTEM STATUS: Official
FAP LOCK: ON
Secure Download: Enabled
KNOX WARRANTY VOID: 0
AP_SWREV: 1
Would appreciate any help, this phone is almost new but now it's dead :/
Your warranty is not voided. Your Knox E-Fuse still intact.
Also this is for S8 not A8 forums.
Paradoxxx said:
Your warranty is not voided. Your Knox E-Fuse still intact.
Also this is for S8 not A8 forums.
Click to expand...
Click to collapse
Thanks,
I just couldn't find any A8 forum, and thought there would be more people here who can help.
Would appreciate any help on this... thanks in advance
wurlitzer99 said:
Thanks,
I just couldn't find any A8 forum, and thought there would be more people here who can help.
Would appreciate any help on this... thanks in advance
Click to expand...
Click to collapse
No worries, your phone is not dead.
Try to find a firmware that correspond to the one you got :
http://updato.com/firmware-archive-select-model?exact=1&q=SM-A800F
and use ODIN : http://dl.sammobile.com/Odin3-v3.12.7.zip
You should be good to go.
EDIT : Also for that error occurred thing, try to be faster than it by starting odin flash before it appears.
Thanks,
The problem is that neither the error nor the Odin page would stay on for more than a few seconds. Once they appear, the screen would go dark after 5-10 seconds and then the "error" page would load again (after being darks for another 10 seconds or so). So I can never have ODIN or Smart Switch connecting to the device (the drivers won't connect in Windows)... making it impossible to upload any firmware.
wurlitzer99 said:
Thanks,
The problem is that neither the error nor the Odin page would stay on for more than a few seconds. Once they appear, the screen would go dark after 5-10 seconds and then the "error" page would load again (after being darks for another 10 seconds or so). So I can never have ODIN or Smart Switch connecting to the device (the drivers won't connect in Windows)... making it impossible to upload any firmware.
Click to expand...
Click to collapse
Could you take a picture of that error ? I've never heard/seen such thing
Hi, thanks for the help !
The error is this:
http://statics1.grupoandroid.com/up...1850.jpg.d2bb2a8b77e4fba5fc6467f3d1547886.jpg
I *think* I have some direction... here's what I did/found:
- I installed Smart Switch on my Mac, and chose "Reinstall Device Driver" from the menu. Then restarted the MAC
- I loaded Smart Switch, and Chose "Emergency Software Recovery and Initialization". Then chose the "Device Initialization" tab
- Added the model number "SM-A800F" and the device's serial number (which are physically written on my device).
Smart Switch determined the firmware version to be used for initialization, as:
PDA:QC3 / PHONEG3 / CSCH4(XXV)
- Smart Switch asked to:
1. Power the device down
2. Load recovery mode by pushing Power+Vol Down+Home, then connect the device to the MAC and choose "Continue" to start the initialization...
The problem/s:
My device won't turn on at all, if I do not connect it to either the charger or the MAC (which acts as a supply source?) - which makes me think the battery is fully drained ? i.e when not connected at all, it won't power on.
But when connected to either the charger or MAC, it would bootloop endlessly. i.e it will load the "error" page mentioned above, shut down itself, reload again, shut down and so on.
(I have to mention, that when I first noticed the bootloop, I reset everything to factory settings, cleared cache etc, and it still bootlooped on the Samsung logo).
If when it shuts down during the loop, I push Power+Vol Down+Home, it would boot to ODIN recovery page, where I can push UP for the Download page, but it will still reboot and will again load into the "error" page, which will again reboot endlessly. If I take the charger off the device, it powers off and won't load with any combination of button push.
I also cannot just make it shut down when the charger is connected, using any of the possible button combinations...
I wonder:
- Is there there's a problem which prevents the battery from being charged at all ?
What's strange is that the original problem which made me get into this whole issue, was that is was endlessly booting to the "samsung" logo - but when I booted to System Recovery or Download/ODIN modes, it stopped rebooting endlessly and stayed on... it was also showing the charging indication when powered off... the battery was charging well ever since.
- Why would it bootloop when connected to the charger ? is it possible that the bootloader went bad during my attept to install firmware using ODIN ? I know it always went through the boot.img and recovery.img successfully and only got stuck at about 50% when installing system.img...
I think the current bootloop problem began only once the battery ran out of power. But why wouldn't it charge at all now ??? It's supposed to still charge in this state, isn't it ?
wurlitzer99 said:
Hi, thanks for the help !
The error is this:
http://statics1.grupoandroid.com/up...1850.jpg.d2bb2a8b77e4fba5fc6467f3d1547886.jpg
I *think* I have some direction... here's what I did/found:
- I installed Smart Switch on my Mac, and chose "Reinstall Device Driver" from the menu. Then restarted the MAC
- I loaded Smart Switch, and Chose "Emergency Software Recovery and Initialization". Then chose the "Device Initialization" tab
- Added the model number "SM-A800F" and the device's serial number (which are physically written on my device).
Smart Switch determined the firmware version to be used for initialization, as:
PDA:QC3 / PHONEG3 / CSCH4(XXV)
- Smart Switch asked to:
1. Power the device down
2. Load recovery mode by pushing Power+Vol Down+Home, then connect the device to the MAC and choose "Continue" to start the initialization...
The problem/s:
My device won't turn on at all, if I do not connect it to either the charger or the MAC (which acts as a supply source?) - which makes me think the battery is fully drained ? i.e when not connected at all, it won't power on.
But when connected to either the charger or MAC, it would bootloop endlessly. i.e it will load the "error" page mentioned above, shut down itself, reload again, shut down and so on.
(I have to mention, that when I first noticed the bootloop, I reset everything to factory settings, cleared cache etc, and it still bootlooped on the Samsung logo).
If when it shuts down during the loop, I push Power+Vol Down+Home, it would boot to ODIN recovery page, where I can push UP for the Download page, but it will still reboot and will again load into the "error" page, which will again reboot endlessly. If I take the charger off the device, it powers off and won't load with any combination of button push.
I also cannot just make it shut down when the charger is connected, using any of the possible button combinations...
I wonder:
- Is there there's a problem which prevents the battery from being charged at all ?
What's strange is that the original problem which made me get into this whole issue, was that is was endlessly booting to the "samsung" logo - but when I booted to System Recovery or Download/ODIN modes, it stopped rebooting endlessly and stayed on... it was also showing the charging indication when powered off... the battery was charging well ever since.
- Why would it bootloop when connected to the charger ? is it possible that the bootloader went bad during my attept to install firmware using ODIN ? I know it always went through the boot.img and recovery.img successfully and only got stuck at about 50% when installing system.img...
I think the current bootloop problem began only once the battery ran out of power. But why wouldn't it charge at all now ??? It's supposed to still charge in this state, isn't it ?
Click to expand...
Click to collapse
Hmmm, the thing is, the battery charging process is actually held on some kind of "mini-boot" OS on Samsung I believe, where the phone boots into a certain state, with that said mini-os to display the battery charging info and this kind of things.
My guess is that you *might* have, or more likely your phone did corrupt the flash at some point for x or y reason.
What I'd do is :
Let the phone on a charger a whole night doing its bootlooping thing. And see from there if the battery would charge.
I'd try another computer with Odin just to be sure something is not triggering the reboot process at some point.
And if all the above fails, you still have the warranty, so beside time, you would not be losing any money..
I'm going to write a long post. But I believe it will help a lot of people having a similar problem.
Long story short - problem solved! but it took much of my nerves (and time).
I'll start with the "warranty". The so-called Samsung "warranty" which basically worths nothing!
Calling Samsung international service center, they "informed" me that I must contact Samsung Vietnam, where I bought the device, although I am not there anymore... Needless to say the local dealer in my country refused to take care of this situation, saying Samsung's warranty is regional based, rather than international... which means, only Samsung in the original country where the device was sold in, are responsible for the warranty (and therefore repair!). I had a chat with a Samsung Vietnam representative, who just kept saying "I'm sorry", and refused to let me sent the device out to them for repair! asking me to "bring it to them", although I noted him a few times that I bought it as a tourist and I am not in Vietnam anymore.... Thank you Samsung !! From now on every traveler in the world will know they basically have NO WARRANTY if they buy any Samsung device in a "foreign" country while traveling abroad!
Now for the solution:
I started by letting the device staying connected to the charger overnight, which didn't help. With the OS now installed, I realize that the battery was NOT CHARGED ! it was completely drained, although connected to a charger for long hours... So, know from now on that if your boot data is corrupted, it may cause the device NOT TO CHARGE THE BATTERY at all. Luckily, my desktop PC could use the device while connected to it although the battery was empty, until the problem was sorted out. I did get a crash on my MAC tough (Log said it was USB related), while using Smart Switch, so one option is that it could not supply enough power to the device to keep it keep working at all, or working correctly... So my suggestion is to use a desktop Windows PC in this case, which can potentially provide more power to a device with 0% battery power.
After scratching my head, and considering removing the front panel for replacing the battery (a very risky procedure) I decided to keep on investigating....
I followed a youtube video who suggests that you should install Smart Switch on a PC, choose "reinstall driver" from the menu, restart the PC, then use Emergency Recovery and Initialization, enter the phone model number in the search box (as appearing on the back of the device) , and once it recognizes the model, also to enter its serial number. Here's the video:
https://www.youtube.com/watch?v=1yXQUFrEWg4
This basically brings up a popup message saying Smart Switch detects a compatible firmware for this device, and is about to download and install it. It then asks the user to do the Power+Vol Up+Home push combination trick + pushing UP once the page is loaded in order to "Continue" and bring up the ODIN Download screen, which worked for me if did that as soon as the device shuts down (in the middle of the bootloop). As I couldn't make it load at all with no charger connected, I had it connected to the charger, and once I saw the Smart Switch message asking to do the push combination, I quickly connected it to the computer using another cable which was already connected to the PC USB port on its other end.
Somehow, I could at last make Smart Switch finally start downloading the firmware from the web, and the device again disconnected (bootlooped), but luckily Smart Switch didn't care about it disconnecting, and kept on downloading the firmware. At about 85% of the progress bar state, I could find the downloaded firmware on the temp folders, which are described in this thread:
http://forum.gsmhosting.com/vbb/f777/samsung-firmware-download-belongs-his-serial-number-2038404/
I had to make sure it wasn't still downloading, and watched the "last modified" state of the file to make sure they are not being downloaded anymore. CAUTION: although the AP was not downloading anymore, I know it was probably not good as ODIN couldn't verify it when I tested it. USE ONLY SMART SWITCH !
I quickly copied the folder to which the app extracted the BL and AP files it downloaded, and finally had an officialy bootloader (BL) image, which I could use in ODIN in order to reupload a correct, "official" bootloader to the device....
I hoped the device won't bootloop in the middle, but luckily ODIN was fast enough to send the image successfully, with a "PASSED" status, and the device booted with a nice "Samsung" logo directly to a System Recovery page!
What I exactly did, was loading ODIN, then loading ONLY the BL file into the BL field in ODIN, having it verifying it, and once verified I connected the device, and as soon as ODIN recognized it, pushed START. It managed to upload the image into the device in a few seconds! It seems then, that the bootloop was not caused by a bad battery, but as a result of a corrupt upload of an AP image through ODIN - or because I possibly was using an incorrect version when I tried to upload an AP files to the device on my first attempt to flash it.
Note that I did search for the correct, compatible AP file, by country and model (on Sammobile) but it didn't' work (stuck at 50% in ODIN) ! so I really suggest everyone TO ONLY USE SMART SWITCH if they want to be sure that the correct firmware is being used, and avoid similar situations...
I then deleted the temp files from the PC (the actual ones which were in the temp folder), reinstalled the drivers from inside Smart Switch (just in case), booted the device to Download mode (WHICH DIDN'T BOOTLOOP this time), let Windows installing the drivers (checked in Device Manager), then restarted the PC, and ran Smart Switch again. I repeated the procedure of loading Emergency and Initialization, entering the model and serial number, having it fully downloading the firmware (again) from the web, and installing the firmware into the device. This time it completed the process, and I finally had the device installing and booting into a fresh version 6.0.1 of Android!
Hope it helps!
Hi
I have a device which is managed by an MDM called SOTI Mobiconrtrol.
My client has been asking for some changes to the lockdown/kisok mode, one of which has resulted in complete loss of connectivity. The device just states 'the process com.android.phone has stopped'
I am unable to manage the device from SOTI because it cannot connect.
The policy also prevents the end user from accessing Settings and on top of this it's low on space.
So I'm in a position where it would appear I've bricked a customers tablet and he wants it back like last week.
I feel that the only way to get past the now not-talking MDM is by root but, I can't unlock the bootloader nor can I enable ADB.
Tried ODIN but I'm proper stuck.
Any advice?
Ryzler13 said:
He wanted it back last week August 2018...
Can you access their files to save them/back them up?
After that...
I spent hours looking for solutions and combinations to make this work, even gave up on it and left the phone sitting around for month, I picked it up again the other day....
This worked for me. T285
Google search and DOWNLOAD:
USB Drivers
(Samsung USB driver 1.5.27.0)
Firmware
T285XXS0ARJ3 (Sammobile dot com)
Odin3
Odin 3.13.1 (odin3.en.lo4d dot com)
Steps:
Install USB Drivers
Open Odin
Plug in your phone
50% Charge or more
Press Home, Vol Down, Power from the OFF state
"WARNING A custom OS can cause Critical issues"
"Volume up to Continue"
Press Volume Up
Check Connection with Odin (top left, Green, Com3)
Load AP and BL Only
Press Start
You're Welcome
Click to expand...
Click to collapse
Why do you keep posting this in every thread?
Did you even read the post above? Simply reinstalling the firmware isn't going to solve the issue which is 7 months old any way.
In trying to root it, I downgraded to H990DS10b_00_open_ame_ds_op_1103 via Uppercut. From there I followed carefully the "dirty Santa comes for the H990" thread. I got through to the "untrusted app" message, but I did not get the bat.2 on the cmd window. So I had to restart the phone, and the screen was weird and unreadable. By coincidence Uppercut was not working, giving "error reading from file" on my Windows machine. So from here I did the mistake and got too impatient. At that time I could still see the phone via ADB. Then I thought it might be helpful to do a hard reset - which obviously was a big mistake. Now it powers up showing the LG logo, gives the sound and turns into a weird screen. I can make sound from it by pressing the screen, but after some time it reboots into is a black screen saying kernel crash. It says that I can restart by pressing vol down. When I do that, the same happens again. It also says that I can do ram drop using QPST configuration, whatever that means?
Do I have to say goodbye to it, of do I have any hope?
Doesn't sound like a hard brick to me. I would completely restart the rooting process.
What I would do however, is make sure that all the programs (LG UP etc) and DirtySanta files are correct and working.
Things to try:
• Make sure the drivers are installed correctly. You can google for LG USB drivers. Install and restart.
• Make sure LG UP is run as administrator (as a precaution to access devices)
• Hold Vol Up while the device is off and the plug in the usb cable (while the other end is plugged into the machine) - this should get you into Download mode
• Make sure that you are running the "Run Me First" files in Dirty Santa. This is a common mistake that I have made before even when re-rooting for the tenth time.
• Run all the Dirty Santa CMD files as administrator (it can't hurt).
As far as the screen, does it look like white noise? if so, it is a known kernel incompatibility (the stock kernel) with root. Best thing to do, is that when you get to the step that requires you to install TWRP and then reboot using the reboot command in fastboot, is that you actually pull the batter out after installing TWRP and then reboot into recovery using the hardware keys (Vol Down and Power Button, then let go of Power Button and repress it whilest holding Vol Down but ONLY when the LG logo first appears.).
This is just some general troubleshooting, and not in any particular order. Hopefully it is of some help.
Thank you very much. I appreciate Some observations before I move on. Yes, the screen looks like white noise. In download mode - it only shows download mode shortly in an box, and then goes to white noise again. I mave manages to get in touch with it from Windows in fastboot mode, here it gives me a serial number from LGUS996, definitely not my h990DS? Is that normal?
Another thing, right now Uppercut is teasing me. I think I started it from the zip file, so now it is looking for the program in a temp file that I cannot find. I need to find out how to remove that link in windows to move on with LGUP.
henrylar said:
Thank you very much. I appreciate Some observations before I move on. Yes, the screen looks like white noise. In download mode - it only shows download mode shortly in an box, and then goes to white noise again. I mave manages to get in touch with it from Windows in fastboot mode, here it gives me a serial number from LGUS996, definitely not my h990DS? Is that normal?
Another thing, right now Uppercut is teasing me. I think I started it from the zip file, so now it is looking for the program in a temp file that I cannot find. I need to find out how to remove that link in windows to move on with LGUP.
Click to expand...
Click to collapse
Even though there is white noise in download mode, download mode will still function.
I'm not sure about the serial number thing though. Is it a refurb?
Rather copy Uppercut to its own file outside of the .zip and also disable your antivirus just incase while you are running it. Run it as administrator.
Honestly, I would go into Download mode and user Uppercut to flash a completely stock KDZ. Then try the process over again from the start.
I've had this exact issue and it is totally recoverable.
Thank you so much for the help. Because of that I am now back to a working phone. Have installed the old KDZ file, and now it correctly says that I have a H990DS phone again. You were right about antivirus - even if I thought I had disabled it, I had not, and that made the strange message in uppercut. I will try rooting once more - this time I know how more about what to do if it goes wrong.
I have now re-installed the santa files again, and everything goes fine according to the description until the message about installing step 2, that message never comes to the first cmd window, unfortunately. And I have not (yet) dared to start the step 2 bat from a new cmd window. As I read the description, it should give me a message in the first started cmd window, right?
henrylar said:
I have now re-installed the santa files again, and everything goes fine according to the description until the message about installing step 2, that message never comes to the first cmd window, unfortunately. And I have not (yet) dared to start the step 2 bat from a new cmd window. As I read the description, it should give me a message in the first started cmd window, right?
Click to expand...
Click to collapse
Did you do the terminal thing on the phone?Also have you installed and drivers the right way?you definitely skip something
I think you are right, I can just not understand what. I did the terminal thing, yes and no failure messages of any kind, just no messages at the first cmd screen. . The drivers works fine for everything else, so I cannot imagine any problem there.
I have now tried several times to do the procedure. It all goes very well until the point where there should come a message in the runmefirst command window. No message comes, and for this reason I have not dared to go on. It gives all the right messages on the terminal window on the phone until the point where I have to run step2.bat. I have become pretty good at recovering via LGUP, but do any of you have a hint for me? I have disables antivirus, and I run the windows as administrator?
edit: I succeeded, by simply moving on without any messages from the runmefirst. Worked fine. So now I am rooted Thank you very much JL and Mike for the help.