Database Users

[Q] Low level format internal memory

For some reason my flexrom partition got corrupted and I would like to low level format, a normal format in cwm can't repair it. Currently I can only install rom that do not touch flexrom. Is this even possible? Any help would be greatly appreciated.

lowsum said:
For some reason my flexrom partition got corrupted and I would like to low level format, a normal format in cwm can't repair it. Currently I can only install rom that do not touch flexrom. Is this even possible? Any help would be greatly appreciated.
Click to expand...
Click to collapse
If you have your cuid number, you can go to the ics recovery thread, and nvflash the patched ics boot loader and recovery. I believe this will format all partitions and wipe the tablet clean leaving only the ics patched boot loader and cwm recovery.
Had to do it on mine yesterday as the leaked 501 updates fubarred all internal memory. No biggie.

Thanks for replying again moscow, I tried this method:
http://forum.xda-developers.com/showthread.php?t=1522384
I think that's the one you were talking about. I don't know why but my tab doesn't wake in "download mode" as specified. I do put it in apx with the reset/power combination but nothing happen when I enter my sbk. Strangely I can use apx with timmydean's 3.2.1 EEUs tool without problem but I can't with nflash...I succesfuly used nflash before to patch the bootloader and flash cwm when I tried the leak back then but it doesn't work anymore.
Something other than flexrom must be wrong...cmw always give me an error when formating flexrom though. At least the ICS rom that shall not be named work fine at least. As I said in my other thread, all leak based rom fail to boot...even the new cm9, probably because it use stock ics kernel. I hope the official ota update will fix it, but I doubt it because even the update.zip with stock recovery failed to boot. Thanks again for your assistance Moscow!

lowsum said:
Thanks for replying again moscow, I tried this method:
http://forum.xda-developers.com/showthread.php?t=1522384
I think that's the one you were talking about. I don't know why but my tab doesn't wake in "download mode" as specified. I do put it in apx with the reset/power combination but nothing happen when I enter my sbk. Strangely I can use apx with timmydean's 3.2.1 EEUs tool without problem but I can't with nflash...I succesfuly used nflash before to patch the bootloader and flash cwm when I tried the leak back then but it doesn't work anymore.
Something other than flexrom must be wrong...cmw always give me an error when formating flexrom though. At least the ICS rom that shall not be named work fine at least. As I said in my other thread, all leak based rom fail to boot...even the new cm9, probably because it use stock ics kernel. I hope the official ota update will fix it, but I doubt it because even the update.zip with stock recovery failed to boot. Thanks again for your assistance Moscow!
Click to expand...
Click to collapse
Well, when I fubarred my blocks, it took me a couple times till I figured out to nvflash from a normal windows cmd window, and not through adb!
Also, although my cuid numbers are different, they output the same sequence through vach's site.
Have you toggled data/media in cwm to completely format the tab?
Still I would try the nvflash for the patched boot loader. That should wipe that puppy clean.

Moscow Desire said:
Well, when I fubarred my blocks, it took me a couple times till I figured out to nvflash from a normal windows cmd window, and not through adb!
Also, although my cuid numbers are different, they output the same sequence through vach's site.
Have you toggled data/media in cwm to completely format the tab?
Still I would try the nvflash for the patched boot loader. That should wipe that puppy clean.
Click to expand...
Click to collapse
Ok I finally got it to enter download mode (I had some missing files) and start the flashing procedure but again with errors. I removed the CLS from the run.bat, so here is the ouput:
Code:
Generate your SBK with your CPUID from here : http://vache-android.com/v1/index.
php?site=sbk
Enter your SBK:0x97D71E00 0xD423C006 0x3B6A2404 0x027A2103
Loading bootloader...
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 3
chip sku: 0x8
chip uid: 0x037c6205447fe157
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 3
sending file: bct.bct
- 4080/4080 bytes sent
bct.bct sent successfully
odm data: 0x300d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714385/714385 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
failed executing command 25 NvError 0x120002
command failure: sync failed (bad data)
bootloader status: Bct Write Failed (code: 22) message: nverror:0x8 (0x11000008)
flags: 0
**********************************************************
* Press any key when your A500 is in bootloader mode *
**********************************************************
Press any key to continue . . .
Flashing patched bootloader V2...
Nvflash started
[resume mode]
Formatting partition 4 please wait.. Command Execution failed cmd 13, error 0x12
0002
FAILED!
command failure: format partition failed (bad command)
bootloader status: unknown operation (code: 1) message: flags: 0
Nvflash started
[resume mode]
So if im right partition 4 is bootloader, hope that helps..Thanks!

lowsum said:
Ok I finally got it to enter download mode (I had some missing files) and start the flashing procedure but again with errors. I removed the CLS from the run.bat, so here is the ouput:
Code:
Generate your SBK with your CPUID from here : http://vache-android.com/v1/index.
php?site=sbk
Enter your SBK:0x97D71E00 0xD423C006 0x3B6A2404 0x027A2103
Loading bootloader...
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 3
chip sku: 0x8
chip uid: 0x037c6205447fe157
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 3
sending file: bct.bct
- 4080/4080 bytes sent
bct.bct sent successfully
odm data: 0x300d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714385/714385 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
failed executing command 25 NvError 0x120002
command failure: sync failed (bad data)
bootloader status: Bct Write Failed (code: 22) message: nverror:0x8 (0x11000008)
flags: 0
**********************************************************
* Press any key when your A500 is in bootloader mode *
**********************************************************
Press any key to continue . . .
Flashing patched bootloader V2...
Nvflash started
[resume mode]
Formatting partition 4 please wait.. Command Execution failed cmd 13, error 0x12
0002
FAILED!
command failure: format partition failed (bad command)
bootloader status: unknown operation (code: 1) message: flags: 0
Nvflash started
[resume mode]
So if im right partition 4 is bootloader, hope that helps..Thanks!
Click to expand...
Click to collapse
I don't know. But clearly something is amiss. When you converted your UID on Vache's site, the new ICS UID converted number, should have been the same as your original UID number. Can you verify? (the 2 UID numbers have the same output)
Example;
0x038061c7409fa617 (HC)
0x79531F00 0xBB680C01 0xFB22E803 0x8ADE2003
38061c7409fa617 (ICS)
0x79531F00 0xBB680C01 0xFB22E803 0x8ADE2003
For some reason, mine stayed the same.
Best bet, run this by Drellisdee on his RA Recovery thread. He;s the master of this, and maybe he has some insight.

A500
Hello lowsum.
I also have this problem as you. Did you find a solution?
"Flashing bootloader: bootloader_v8.bin ...
Nvflash started
[resume mode]
Formatting partition 4 please wait.. Command Execution failed cmd 13, error 0x120002
FAILED!
command failure: format partition failed (bad command)
bootloader status: unknown operation (code: 1) message: flags: 0
Nvflash started
[resume mode]"

[Q] Acer iconia a500 power but no display

i have this acer iconia i recently update facebook via playstore,its getting bootloop then suddenly when i press the power button on the power led indicator will lights but no display could someone can help me?:crying:

katz1328 said:
i have this acer iconia i recently update facebook via playstore,its getting bootloop then suddenly when i press the power button on the power led indicator will lights but no display could someone can help me?:crying:
Click to expand...
Click to collapse
Sounds like you are stuck in APX mode. A little reading will straighten things out.

badly needed help
could someone give some links to fix this problem i dont have my cpu id and sbk, EUU stop working in my laptop, apx tools are not working could someone help me im badly needed some help w/ this matter tnx for thos who help me

I have the exact same issue.
Power button turns white - screen is black - no vibration from power button - seems dead.
The tablet was untouched and stock - I have never rooted anything or messed with any ROMs.
It had updated to ICS a while back and was working great until yesterday when it just wouldn't turn on besides the power button.
I have tried holding down the volume up and power button reset. I have tried the reset button. I have tried unhooking the battery.
After checking this forum I have installed the ACER drivers and plugged the tablet into my PC. It is showing up as APX.
I believe I am stuck in APX mode so from what I'm reading there is hope I can somehow salvage the tablet even though I didn't try flashing
anything and haven't screwed with it before.
Since I have never messed with flashing android stuff I really have no idea where to start as the guides seem to be for people who have experience. Where do I start? From what I'm reading I'll need a CPUID but how do I get that from a "dead" machine.
I am a quick learner if someone has the time to point in the right direction. Maybe I'll get hooked on flashing ROMs and can contribute something here.
Thanks for any help you can give.

If yr tab is stuck in apx mode, you're gonna need yr cpuid to recover it, there is no other way....see cpuid guide in my SIG and checkout srbeens method using Linux to retrieve it or usbdeview....
If getting stuck happened spontaneously it points to the faulty chip issue requiring replacement from Acer... check post #3 of the root guide in my SIG for ways to recover from apex mode, you might get lucky but be aware that if its happened once it will happen again...
EDIT see this post http://forum.xda-developers.com/showthread.php?p=37421071 regarding new motherboards on eBay
Sent from my GT-I9300 using Tapatalk 2

dibb_nz said:
If yr tab is stuck in apx mode, you're gonna need yr cpuid to recover it, there is no other way....see cpuid guide in my SIG and checkout srbeens method using Linux to retrieve it or usbdeview....
If getting stuck happened spontaneously it points to the faulty chip issue requiring replacement from Acer... check post #3 of the root guide in my SIG for ways to recover from apex mode, you might get lucky but be aware that if its happened once it will happen again...
EDIT see this post http://forum.xda-developers.com/showthread.php?p=37421071 regarding new motherboards on eBay
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Thank you for the info. I was able to get my cpuid and sbk last night following the guide that used Ubuntu live cd. It was fun to play with Linux again.
I want to try and recover and if it continues to be a problem I will replace the board.
Looking at post 3 from your guide it appears my next step will be to use nvflash.
I am a little lost on what I will be flashing since I don't have anything backed up (flash a recovery?) and don't have a custom ROM to flash.
I just a need a push in the right direction.
Thanks for the help.

sixstring774 said:
Thank you for the info. I was able to get my cpuid and sbk last night following the guide that used Ubuntu live cd. It was fun to play with Linux again.
I want to try and recover and if it continues to be a problem I will replace the board.
Looking at post 3 from your guide it appears my next step will be to use nvflash.
I am a little lost on what I will be flashing since I don't have anything backed up (flash a recovery?) and don't have a custom ROM to flash.
I just a need a push in the right direction.
Thanks for the help.
Click to expand...
Click to collapse
Well done getting yr cpuid!!
If you want stock, your best bet is an Acer EUU. There's one in the guide which will take u back to HC 3.0.1. Blackthund3r has one in his acer OTA update thread too I think in dev forum....
Next step is getting out of apx mode...use lcd047's method in the cpuid guide....just use the image folder from your EUU ...and no need to do the boot loader part....Also use Linux again to run nvflash commands, no driver issues with that, unlike windows....
See how u go with that for a start. You should be able to OTA all the way to ICS with that EUU, if u want.
Sent from my GT-I9300 using Tapatalk 2

dibb_nz said:
Well done getting yr cpuid!!
If you want stock, your best bet is an Acer EUU. There's one in the guide which will take u back to HC 3.0.1. Blackthund3r has one in his acer OTA update thread too I think in dev forum....
Next step is getting out of apx mode...use lcd047's method in the cpuid guide....just use the image folder from your EUU ...and no need to do the boot loader part....Also use Linux again to run nvflash commands, no driver issues with that, unlike windows....
See how u go with that for a start. You should be able to OTA all the way to ICS with that EUU, if u want.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Well we are getting somewhere but I hit a snag.
After running nvflash command the tablet instantly vibrated and I now have the ACER logo on the screen and the words Entering Acer Download Mode in the corner. I'm not sure if the command ran correctly as there was an error at the end in regards to partitions
[email protected]:~/Desktop/nvflash/Image$ sudo ./nvflash --bct flash.bct --setbct --odmdata 0x100c0105 --configfile flash.cfg --create --bl bootloader.bin --sbk 0x6C886F00 0xA4A2F106 0x4BEB1504 0xD8292103 --go
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x037c70044220d657
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0x100c0105
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714385/714385 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
failed executing command 16 NvError 0x120002
command failure: create failed (bad data)
bootloader status: failed to create the partition (code: 10) message: nverror:0x5 (0x1000005) flags: 0
What to do next? Thanks for guiding me in the right direction.

sixstring774 said:
Well we are getting somewhere but I hit a snag.
After running nvflash command the tablet instantly vibrated and I now have the ACER logo on the screen and the words Entering Acer Download Mode in the corner. I'm not sure if the command ran correctly as there was an error at the end in regards to partitions
[email protected]:~/Desktop/nvflash/Image$ sudo ./nvflash --bct flash.bct --setbct --odmdata 0x100c0105 --configfile flash.cfg --create --bl bootloader.bin --sbk 0x6C886F00 0xA4A2F106 0x4BEB1504 0xD8292103 --go
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x037c70044220d657
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0x100c0105
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714385/714385 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
failed executing command 16 NvError 0x120002
command failure: create failed (bad data)
bootloader status: failed to create the partition (code: 10) message: nverror:0x5 (0x1000005) flags: 0
What to do next? Thanks for guiding me in the right direction.
Click to expand...
Click to collapse
OK bad data and partition error too...
Which EUU did u end up using?
tdv4 is known to reset partitions but in some instances fails. The babsector.rar file can be more successful... link in the root guide with some instructions how to use.
You're gonna need a ROM to flash and At this stage I'd suggest a custom ICS one...
babsector will/should also flash up the skrilax_cz v8 unlocked bootloader.
If u get still get a bad data error then yr tab is toast...BUT keep trying it 8, 10, 15 times you may get lucky
PS:
Oh check the euu image folder for the .bat file and see if the odm data values match with what u are using manually.
There are 2 values used in different euu's and no-one as ever explained why this is....the one u used and this one 0x300d8011
To leave download/apx mode the windows command is nvflash -r --go
See vaches post bottom of post 3 in root guide, for more nvflash commands. You might just get lucky
good luck!!
dibb
Sent from my GT-I9300 using Tapatalk 2

dibb_nz said:
OK bad data and partition error too...
Which EUU did u end up using?
tdv4 is known to reset partitions but in some instances fails. The babsector.rar file can be more successful... link in the root guide with some instructions how to use.
You're gonna need a ROM to flash and At this stage I'd suggest a custom ICS one...
babsector will/should also flash up the skrilax_cz v8 unlocked bootloader.
If u get still get a bad data error then yr tab is toast...BUT keep trying it 8, 10, 15 times you may get lucky
PS:
Oh check the euu image folder for the .bat file and see if the odm data values match with what u are using manually.
There are 2 values used in different euu's and no-one as ever explained why this is....the one u used and this one 0x300d8011
To leave download/apx mode the windows command is nvflash -r --go
See vaches post bottom of post 3 in root guide, for more nvflash commands. You might just get lucky
good luck!!
dibb
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
I used this EUU
Official Acer EUU 3.0.1
WHOA!! Something happened overnight. When I went to bed last night I was stuck in APX.
I was going to try a new EUU or babsector like you suggested. As I was getting ready to do that I powered on the tablet. It vibrated and the ACER logo came up on the screen. First time it has done that since I started trying to fix it. It does not say it is download mode like it did before.
Looking at the guide there is a section that says
Use this update.zip for any of the following:
- You do not have your cpuid
- You are stuck on the "Acer" Logo
- Your tab boots past the Acer Logo but then boot loops at the boot animation
- You are on the old HC bootloader /ICS Rom combination
- You wish to return to factory stock, and OTA all the way to Stock ICS
Should I be trying that now?
---------- Post added at 06:25 PM ---------- Previous post was at 05:48 PM ----------
sixstring774 said:
I used this EUU
Official Acer EUU 3.0.1
WHOA!! Something happened overnight. When I went to bed last night I was stuck in APX.
I was going to try a new EUU or babsector like you suggested. As I was getting ready to do that I powered on the tablet. It vibrated and the ACER logo came up on the screen. First time it has done that since I started trying to fix it. It does not say it is download mode like it did before.
Looking at the guide there is a section that says
Use this update.zip for any of the following:
- You do not have your cpuid
- You are stuck on the "Acer" Logo
- Your tab boots past the Acer Logo but then boot loops at the boot animation
- You are on the old HC bootloader /ICS Rom combination
- You wish to return to factory stock, and OTA all the way to Stock ICS
Should I be trying that now?
Click to expand...
Click to collapse
I ended up trying the tdv4 EUU. I put the tablet back into APX mode.
This was the result.
[email protected]:~/Desktop/root-3.2.1/Image$ sudo ./nvflash --bt --odmdata 0x100c0105 --configfile flash.cfg --create --bl bootloader.bin --sbk 0x6C886F00 0xA4A2F106 0x4BEB1504 0xD8292103 --go
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x037c70044220d657
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0x100c0105
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714385/714385 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
creating partition: PT
creating partition: EBT
creating partition: GP1
creating partition: SOS
creating partition: LNX
creating partition: APP
creating partition: CAC
creating partition: MSC
creating partition: FLX
creating partition: AKB
creating partition: UDA
creating partition: GPT
Formatting partition 2 BCT please wait.. FAILED!
command failure: create failed (bad data)
bootloader status: partition table is required for this command (code: 8) message: nverror:0x4 (0x4) flags: 0
I just tried babsector on my PC. It also had an error
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x037c70044220d657
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0xb00d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714409/714409 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
creating partition: PT
creating partition: APP
creating partition: EBT
creating partition: GP1
creating partition: SOS
creating partition: LNX
creating partition: CAC
creating partition: MSC
creating partition: FLX
creating partition: AKB
creating partition: UDA
creating partition: GPT
failed executing command 12 NvError 0x120002
command failure: create failed (bad data)
bootloader status: fatal failure to read / write to mass storage (code: 9) messa
ge: nverror:0x8 (0x19000008) flags: 0
Press any key to continue . . .
Ideas?

Its not looking good m8
Someone else posted ebay have new m/b's listed for $50, you may want to look into that??
Couple of things to note though:
maybe just a copy/paste error but
you wrote: [email protected]:~/Desktop/root-3.2.1/Image$ sudo ./nvflash --bt --odmdata 0x100c0105
should be nvflash --bct flash.bct --setbct --configfile flash.cfg --create --odmdata 0xb00d8011 --bl bootloader.bin --go
the BCT error - if you d/l apxflash tool and run it....you MUST dump, save then use your tabs BCT when u get to the "bct window" - carry on with the tool and then put your tab in apx mode manually - just before the flash you'll see a window with a couple of check boxes "show nvflash commands'" check that to show any flash errors....flash it and see what happens
failure to write to mass storage - just another symptom of the "bad sector fault"
you might try a factory hard reset via rotation switch - this should wipe all userdata and cache and has been known to fix a few problems
With all the tools and some persistence (otherwise known as banging one's head against a brick wall. lol) something may end up working....thats all I can offer you at the moment...others who have been in this same situation will post something like you did...whoa all of a sudden it worked!!!! Be aware though it will happen again sometime in the future unfortunately...as I said before, your best bet is gonna be ebay

Well I tried for a few more hours to get something flashed and finally gave up and ordered a new board. Since this thing bricked itself without me ever screwing around with the file system I've got to believe it's a hardware issue. Hopefully the new board will last longer than 14 months like this one. Thanks for the tips on trying to revive it. After installing the new board I might get into some of this custom ROM stuff. What do you suggest for a ROM?

a500 USB DRIVER VANISHES
I need a little help my device is stuck in apx mode (blank screen with power led on) i have uid (cpuid) and sbk i have read a lot fom this forum and have all the tool to root, flash, load.. But my main problem is that when i reset my acer a500 and the usb is attached the windows 7 recognizes the driver and (sound pops up) and the driver (acer picasso usb boot recovery driver) is there but no tool e.g apxtool or fastflash or ics rooting nothing works or regocznies the device coz when i press any option or press the key to continue the drive drops and vanishes from the window usb list in device manager and i have to manually reset acer again to get the driver back but still no use as command prompt tells me that no device is attached or found. Please help as this acer is my wifes gift to me and im trying hard to get it back its totally dead

[Q] A500 flashing fails

I am not sure of the best place to post this. I am having trouble installing loader/ROM on an Acer A500 tablet. I have read many of the posts here and in other forums and have tried several of the suggestions/guides. I think I am just digging the hole deeper and need some guidance on the path I should follow at this point.
The tablet is running Android 4.0.3 (Acer_AV041_A500_1.033.00_PA_CUS1), which has been completely stock and not rooted up to now. I followed directions on several postings (mainly by dibb_nz) on this forum, but have not been successful.
Here's how far I got and where I went off the rails.
I rooted it using SuperUser.
I collected the CPUID and got the SBK number.
I downloaded/installed Acer drivers and Andriod SDK.
I downloaded APX_v0.4A-flashTool-500Manager1.0.2_(1) and ran A500Manager and found that it could get info from the tablet.
I ran A500APXFlash, downloaded bundle 17, entered the SBK.
I manually put the table in APX mode, confirmed it is the Windows system tray (APX Device) and A500APXFlash reported it in that mode.
I proceeded to flash (in A500APXFlash). Here is where it went off the rails.
It hung at some point, but I can't recall exactly where (I've done many things since), but it was it was something like formatting the flash. I let it go for an hour and finally killed everything and rebooted the tablet.
I tried many more things, but always ended in failure. One was manual flashing with nvFlash. Below are the highlights of the batch file output to show how far it got:
Code:
Enter your SBK: <removed for security reasons?
* Make your choise: *
*(4) ICS bootloader V8 with Thor-1.7.3 NEW cwm(touch cwm)*
* with its compatible recoveries. *
(1 2 3 4):4
Loading bootloader...
nvflash --bct bct.bct --setbct --bl bootloader_apx.bin --configfile flash.cfg --odmdata 0x300d8011 --sbk 0xA88B1E00 0x9726AB01 0xD76C4F03 0x00022103 --sync
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: <removed for security>
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: bct.bct
- 4080/4080 bytes sent
bct.bct sent successfully
odm data: 0x300d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader_apx.bin
| 714981/714981 bytes sent
bootloader_apx.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
failed executing command 25 NvError 0x120002
command failure: sync failed (bad data)
bootloader status: partition table is invalid, missing required information (code: 14) message: nverror:0x4 (0x4) flags: 0
During the above, the tablet said "Acer Iconia APX mode."
At one point I tried installing the CWM loader (I think it was that one). I also ran the Android adb program and was able to talk to the tablet through a command prompt.
Somewhere along the line, the Windows system tray driver report began saying "Acer USB Boot Recovery Driver" instead of "APX Device." I'm not sure when or what I did to cause it.
Another change in behavior is that the recovery mode boot (Power+VolDn) used to result in a dead robot icon. Now it looks like it is doing "SD update cmd: recovery" which fails (I put no SD card in it).
It appears that somewhere along the line (early in my trials) the BCT might have gotten wiped out and I cannot find a copy of it. I have seen various places where flashing hangs during a format or a download operation.
I have tried as much as I dare without help (maybe too much). At this point, by tablet is not bricked -- it still boots to Android 4.0.3. But I would like to restore it to where it was and then try the process again.
I have been trying to do the Timmy Dean EUU recovery to stock, but I have not been able to get the files. It seems that most of the links are either broken, or go to what lools like some pretty shady places. I'm not sure I should even be trying this route and, if I do, which EUU I should attempt.
I am fluent in Linux and have a Ubuntu 12.04 (VM) I can run if that's the best approach. I am also somewhat familiar with ARM Linux and the Marvell and TI-OMAP boot processes if any of this is useful. I am a complete noob on Android and the various ROMS, Loaders and mods. In fact, at this point, I'm not even sure what state tablet is in -- what loader is there, what has happened the flash ... -- or how to find out.
Thanks for whatever help/guidance you can give me.

Babsector errors out with "create failed (bad data)"

****************************************************************
* Before executing, be sure to delete recovery-from-boot.p *
* from /system to ensure recovery will stick *
****************************************************************
****************************************
* Reboot your tablet into APX mode *
****************************************
Generate your SBK with your CPUID from here :
]
Enter your SBK:0x9180C201 0x7B22F106 0x7B4D1504 0x62512103
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 3
chip sku: 0x8
chip uid: 0x04280003433fd217
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0xb00d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714409/714409 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
creating partition: PT
creating partition: APP
creating partition: EBT
creating partition: GP1
creating partition: SOS
creating partition: LNX
creating partition: CAC
creating partition: MSC
creating partition: FLX
creating partition: AKB
creating partition: UDA
creating partition: GPT
failed executing command 12 NvError 0x120002
command failure: create failed (bad data)
bootloader status: fatal failure to read / write to mass storage (code: 9) messa
ge: nverror:0x8 (0x19000008) flags: 0
Press any key to continue . . .

Sorry chap u got faulty memory chip error. Can try acer support, someone else had tab out of warranty last week. Acer repairing for free. Worth a shot!
Sent from my GT-I9300 using Tapatalk

dibb_nz said:
Sorry chap u got faulty memory chip error. Can try acer support, someone else had tab out of warranty last week. Acer repairing for free. Worth a shot!
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
Could you give a link or something?
In germany there is a warranty of 24 months if the producer have given a faulty device.
But I've only time until tommorow xD, so some stuff would help me to get a functionally device .

Fiedler5895 said:
Could you give a link or something?
In germany there is a warranty of 24 months if the producer have given a faulty device.
But I've only time until tommorow xD, so some stuff would help me to get a functionally device .
Click to expand...
Click to collapse
As far as I know you just go to the acer website. Choose "support" from the menu. I've never had to do it myself, so can't help much. The other thing is that it doesn't matter if your tab is out of warranty or not, acer seems to honour it anyway, according to the last few users who've done this.

babsector download no longer available Russian site
Please help can somebody provide me with the babsector.rar (Needed for my Acer Iconia a500) seem like Russian site is no longer available, please somebody help me. Thanks in advance!:cyclops:

Root guide in my Sig 2nd post
Sent from my HTC_PN071 using Tapatalk

BCT create error... Help!!!
Hi, All!
First of all sorry for my English...
I have a problem with my Acer Iconia Tab A501.
History:
- once upon a time, when i turn on my tablet, i have a logo ACER...and booting not continued
- i had not SD card and decide recover my A501 from my PC.
- i look at tons of posts about this, and i use EUUS method (EUUs_SBK_Acer_A501_0.017.01_PA_ATT)
- i tried to run this EUUS many times, but obtain Error when tablet turn on from APX mode to "Entering Acer Downloader Mode"
- i tried many different FastUnbric & SlowUnbrick packages - nothing happened. (stuck on creating BCT, or lower formatting BCT)
- one of the days i use EUUS again? and it works! And i have HC 3.0.1
- then i put on SD card image.dat with HC 3.2.1 - OK!
- then i take upgrades from ACER with WiFi - OK!
- then i take upgrade ti ICS 4.0.3 from ACER with WiFi - download success, but when tab rebooted - logo ACER...and booting not continued
- from SD card put 3.2.1 over 4.0.3 - OK! AND I HAVE FUN ABOUT MONTH!!!
- but i want 4.0.3!!!
- insalling this version have one result - logo ACER (installing wia WiFi, or from SD card)
- ok many manipulation with others unbrickers (icluding BabSector) have one result - my Tab Bricked in APX mode and turned on with NVFLASH to "Entering Acer Downloader Mode".
Lower "screenshot" of BabSector, i have this now!
I don't think the eMMC chip is dead - this error was early, but 3.2.1 worked fine about the month until i decided upgrade it to ICS 4.0.3
CPUID and SBK - correct!!!
Here is EROOR:
****************************************************************
* Before executing, be sure to delete recovery-from-boot.p *
* from /system to ensure recovery will stick *
****************************************************************
****************************************
* Reboot your tablet into APX mode *
****************************************
Enter your SBK:0xC3A11E00 0x9743C501 0xD7092103 0x302C2103
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x038061c7428041d7
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0xb00d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714409/714409 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
failed executing command 16 NvError 0x120002
command failure: create failed (bad data)
bootloader status: failed to create the partition (code: 10) message: nverror:0x
5 (0x1000005) flags: 0
Для продолжения нажмите любую клавишу . . .
Thanks to All...
Serg.

Same problem
Hello, I have the same problem. can anyone help?
[email protected] said:
Hi, All!
First of all sorry for my English...
I have a problem with my Acer Iconia Tab A501.
History:
- once upon a time, when i turn on my tablet, i have a logo ACER...and booting not continued
- i had not SD card and decide recover my A501 from my PC.
- i look at tons of posts about this, and i use EUUS method (EUUs_SBK_Acer_A501_0.017.01_PA_ATT)
- i tried to run this EUUS many times, but obtain Error when tablet turn on from APX mode to "Entering Acer Downloader Mode"
- i tried many different FastUnbric & SlowUnbrick packages - nothing happened. (stuck on creating BCT, or lower formatting BCT)
- one of the days i use EUUS again? and it works! And i have HC 3.0.1
- then i put on SD card image.dat with HC 3.2.1 - OK!
- then i take upgrades from ACER with WiFi - OK!
- then i take upgrade ti ICS 4.0.3 from ACER with WiFi - download success, but when tab rebooted - logo ACER...and booting not continued
- from SD card put 3.2.1 over 4.0.3 - OK! AND I HAVE FUN ABOUT MONTH!!!
- but i want 4.0.3!!!
- insalling this version have one result - logo ACER (installing wia WiFi, or from SD card)
- ok many manipulation with others unbrickers (icluding BabSector) have one result - my Tab Bricked in APX mode and turned on with NVFLASH to "Entering Acer Downloader Mode".
Lower "screenshot" of BabSector, i have this now!
I don't think the eMMC chip is dead - this error was early, but 3.2.1 worked fine about the month until i decided upgrade it to ICS 4.0.3
CPUID and SBK - correct!!!
Here is EROOR:
****************************************************************
* Before executing, be sure to delete recovery-from-boot.p *
* from /system to ensure recovery will stick *
****************************************************************
****************************************
* Reboot your tablet into APX mode *
****************************************
Enter your SBK:0xC3A11E00 0x9743C501 0xD7092103 0x302C2103
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x038061c7428041d7
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0xb00d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714409/714409 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
failed executing command 16 NvError 0x120002
command failure: create failed (bad data)
bootloader status: failed to create the partition (code: 10) message: nverror:0x
5 (0x1000005) flags: 0
Для продолжения нажмите любую клавишу . . .
Thanks to All...
Serg.
Click to expand...
Click to collapse

TRY THIS!!!
Worked for me. try this
http://forum.xda-developers.com/showthread.php?t=2617196
[email protected] said:
Hi, All!
First of all sorry for my English...
I have a problem with my Acer Iconia Tab A501.
History:
- once upon a time, when i turn on my tablet, i have a logo ACER...and booting not continued
- i had not SD card and decide recover my A501 from my PC.
- i look at tons of posts about this, and i use EUUS method (EUUs_SBK_Acer_A501_0.017.01_PA_ATT)
- i tried to run this EUUS many times, but obtain Error when tablet turn on from APX mode to "Entering Acer Downloader Mode"
- i tried many different FastUnbric & SlowUnbrick packages - nothing happened. (stuck on creating BCT, or lower formatting BCT)
- one of the days i use EUUS again? and it works! And i have HC 3.0.1
- then i put on SD card image.dat with HC 3.2.1 - OK!
- then i take upgrades from ACER with WiFi - OK!
- then i take upgrade ti ICS 4.0.3 from ACER with WiFi - download success, but when tab rebooted - logo ACER...and booting not continued
- from SD card put 3.2.1 over 4.0.3 - OK! AND I HAVE FUN ABOUT MONTH!!!
- but i want 4.0.3!!!
- insalling this version have one result - logo ACER (installing wia WiFi, or from SD card)
- ok many manipulation with others unbrickers (icluding BabSector) have one result - my Tab Bricked in APX mode and turned on with NVFLASH to "Entering Acer Downloader Mode".
Lower "screenshot" of BabSector, i have this now!
I don't think the eMMC chip is dead - this error was early, but 3.2.1 worked fine about the month until i decided upgrade it to ICS 4.0.3
CPUID and SBK - correct!!!
Here is EROOR:
****************************************************************
* Before executing, be sure to delete recovery-from-boot.p *
* from /system to ensure recovery will stick *
****************************************************************
****************************************
* Reboot your tablet into APX mode *
****************************************
Enter your SBK:0xC3A11E00 0x9743C501 0xD7092103 0x302C2103
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x038061c7428041d7
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0xb00d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714409/714409 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
failed executing command 16 NvError 0x120002
command failure: create failed (bad data)
bootloader status: failed to create the partition (code: 10) message: nverror:0x
5 (0x1000005) flags: 0
Для продолжения нажмите любую клавишу . . .
Thanks to All...
Serg.
Click to expand...
Click to collapse

TechShui said:
****************************************************************
...command failure: create failed (bad data)
bootloader status: fatal failure to read / write to mass storage (code: 9) messa
ge: nverror:0x8 (0x19000008) flags: 0
Press any key to continue . . .
Click to expand...
Click to collapse
Sound like a EMMC/ROM problem...Just send it to RMA if you could.

But what if it's out of warranty?
I took out the Mother Board to a local electronics repairman, he blew heat gun over the sandiskNAND memory chip. I put it back together and turned on. To my surprise it worked.
You can find a thread link in my post above for further help.
androidvillage said:
Sound like a EMMC/ROM problem...Just send it to RMA if you could.
Click to expand...
Click to collapse

farhanalisyed said:
But what if it's out of warranty?
I took out the Mother Board to a local electronics repairman, he blew heat gun over the sandiskNAND memory chip. I put it back together and turned on. To my surprise it worked.
You can find a thread link in my post above for further help.
Click to expand...
Click to collapse
Pretty much all 500 and 501 tablets are out of warranty. I believe maybe some few places may have them new, and sell them. But I wouldnt buy one. (hence the RMA post). But technically, if you buy it, it starts the warranty, so indeed you should be able to RMA the purchase.

Acer a500 stuck in APX mode

Hi, I'm new to this forum and pretty much new to rooting/flashing tablets of any kind. I have a Acer a500 with stock rom which just broke down a couple of days ago for no reason. After much googling and searching this forum I have figured out that it is stuck in apx mode and I've tried everything I can to fix it but so far nothing has worked. Suffice it to say when I use nvflash I get this error.
C:\Users\user\Downloads\nvflash-A500>nvflash --bct bct.bct --setbct --bl bootl
oader.bin --configfile flash.cfg --odmdata 0x300d8011 --sbk 0x6b721f00 0x6447ba0
1 0x8b0e5e03 0x48dd2003 --sync
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x037c624340608197
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: bct.bct
- 4080/4080 bytes sent
bct.bct sent successfully
odm data: 0x300d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714385/714385 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
failed executing command 25 NvError 0x120002
command failure: sync failed (bad data)
bootloader status: partition table is invalid, missing required information (cod
e: 14) message: nverror:0x5 (0x1000005) flags: 0
C:\Users\user\Downloads\nvflash-A500>nvflash -r --format_partition 4
Nvflash started
[resume mode]
Formatting partition 4 please wait.. Command Execution failed cmd 13, error 0x12
0002
FAILED!
command failure: format partition failed (bad command)
bootloader status: unknown operation (code: 1) message: flags: 0
C:\Users\user\Downloads\nvflash-A500>nvflash -r --download 4 bootloader.bin
Nvflash started
[resume mode]
I assumed my partitions were corrupted so I've tried running babsector but am unable to start up in recovery mode after running a501 A.bat. I've also tried many other things but nothing has worked. Does anyone have any suggestions? I'd really appreciate any advice. Thanks!

procedure
for babsector to work you need to run A then reboot to APX mode - then run B if it shows an error than it will be a hardware failure
truthtrans said:
Hi, I'm new to this forum and pretty much new to rooting/flashing tablets of any kind. I have a Acer a500 with stock rom which just broke down a couple of days ago for no reason. After much googling and searching this forum I have figured out that it is stuck in apx mode and I've tried everything I can to fix it but so far nothing has worked. Suffice it to say when I use nvflash I get this error.
C:\Users\user\Downloads\nvflash-A500>nvflash --bct bct.bct --setbct --bl bootl
oader.bin --configfile flash.cfg --odmdata 0x300d8011 --sbk 0x6b721f00 0x6447ba0
1 0x8b0e5e03 0x48dd2003 --sync
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x037c624340608197
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: bct.bct
- 4080/4080 bytes sent
bct.bct sent successfully
odm data: 0x300d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714385/714385 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
failed executing command 25 NvError 0x120002
command failure: sync failed (bad data)
bootloader status: partition table is invalid, missing required information (cod
e: 14) message: nverror:0x5 (0x1000005) flags: 0
C:\Users\user\Downloads\nvflash-A500>nvflash -r --format_partition 4
Nvflash started
[resume mode]
Formatting partition 4 please wait.. Command Execution failed cmd 13, error 0x12
0002
FAILED!
command failure: format partition failed (bad command)
bootloader status: unknown operation (code: 1) message: flags: 0
C:\Users\user\Downloads\nvflash-A500>nvflash -r --download 4 bootloader.bin
Nvflash started
[resume mode]
I assumed my partitions were corrupted so I've tried running babsector but am unable to start up in recovery mode after running a501 A.bat. I've also tried many other things but nothing has worked. Does anyone have any suggestions? I'd really appreciate any advice. Thanks!
Click to expand...
Click to collapse

freightyard said:
for babsector to work you need to run A then reboot to APX mode - then run B if it shows an error than it will be a hardware failure
Click to expand...
Click to collapse
Thanks for replying. I ran A first and these were the results....
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x037c624340608197
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0xb00d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714409/714409 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
failed executing command 16 NvError 0x120002
command failure: create failed (bad data)
bootloader status: failed to create the partition (code: 10) message: nverror:0x
5 (0x1000005) flags: 0
Press any key to continue . . .
Then I shut down and restarted again....still in apx mode...and ran B...
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 4
chip sku: 0x8
chip uid: 0x037c624340608197
macrovision: disabled
hdcp: enabled
sbk burned: true
dk burned: true
boot device: emmc
operating mode: 4
device config strap: 0
device config fuse: 0
sdram config strap: 0
sending file: flash.bct
- 4080/4080 bytes sent
flash.bct sent successfully
odm data: 0xb00d8011
downloading bootloader -- load address: 0x108000 entry point: 0x108000
sending file: bootloader.bin
| 714409/714409 bytes sent
bootloader.bin sent successfully
waiting for bootloader to initialize
bootloader downloaded successfully
setting device: 2 3
creating partition: BCT
failed executing command 16 NvError 0x120002
command failure: create failed (bad data)
bootloader status: failed to create the partition (code: 10) message: nverror:0x
5 (0x1000005) flags: 0
Press any key to continue . . .
Just wanted to note that when I tried to flash using blackthund3rs apx flash tool my tablet shows a green acer logo in the middle of the screen and in the top left it says something like entering apx mode, but when I run the babsecter it has the normal white acer logo in the middle of the screen and in the top left it says entering acer download mode. Don't know if that is pertinent or not but just thought I'd mention it.
So from the results above does it sound like my tablet is just not going to be revived? Is it a hardware failure for sure?

hardware
looks like it
you could reflow the board just do a search in forum on reflowing for procedure