Related
hello everyone ,
i had a problem couple of days ago about "boot-looping" in which i was stuck always with ACER logo and nothing else
and finally i bypassed this stage by doing EUU recovery :crying: and back to HoneyComb 3.0.2 ...which is extremely lagy and buggy and lazy
tried to search for "Acer Enhancement" app in the market , and then when i found it , it told me "it's not compatible with the tablet "
so i had the other option , trying to do system update from sittings , however again is told me "system up to date"
lastly , i tried to update through "A500 APX Flash" to update first the BL .... i tried MANY options and packages and all were stuck at "second stage : uploading bootloader"
so , i went manually and tried through NvFlash , and tried many possible bootloaders , however all come out with the same error :
Code:
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]
then again , i tried all the update.zip (7 stock ICS packages ) with no success and all failed
how can i upgrade ? ... it's to buggy and annoying that many applications are not ICS restricted only !!
any idea ...help ?
Dr.GM said:
hello everyone ,
i had a problem couple of days ago about "boot-looping" in which i was stuck always with ACER logo and nothing else
and finally i bypassed this stage by doing EUU recovery :crying: and back to HoneyComb 3.0.2 ...which is extremely lagy and buggy and lazy
tried to search for "Acer Enhancement" app in the market , and then when i found it , it told me "it's not compatible with the tablet "
so i had the other option , trying to do system update from sittings , however again is told me "system up to date"
lastly , i tried to update through "A500 APX Flash" to update first the BL .... i tried MANY options and packages and all were stuck at "second stage : uploading bootloader"
so , i went manually and tried through NvFlash , and tried many possible bootloaders , however all come out with the same error :
Code:
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]
then again , i tried all the update.zip (7 stock ICS packages ) with no success and all failed
how can i upgrade ? ... it's to buggy and annoying that many applications are not ICS restricted only !!
any idea ...help ?
Click to expand...
Click to collapse
You probably used the Timmy Dean EUU? If so, it has disabledOTA, to prevent breaking root. It has instructions to re-enable OTA, but might be easier for you to just flash stock EUU from http://forum.xda-developers.com/showthread.php?t=1816560 , then simply update in the play market. This assumes you want to go stock. You could also install a ics bootloader, a custom recovery, & flash whatever ROM you like.
Dr.GM said:
hello everyone ,
i had a problem couple of days ago about "boot-looping" in which i was stuck always with ACER logo and nothing else
and finally i bypassed this stage by doing EUU recovery :crying: and back to HoneyComb 3.0.2 ...which is extremely lagy and buggy and lazy
tried to search for "Acer Enhancement" app in the market , and then when i found it , it told me "it's not compatible with the tablet "
Click to expand...
Click to collapse
it only works only to take you from HC 3.2 to ICS 4
so i had the other option , trying to do system update from sittings , however again is told me "system up to date"
Click to expand...
Click to collapse
if this is the case then you've used the wrong build number to flash - not sure where you got the EUU from but it definitely is not timmydeansv4!
lastly , i tried to update through "A500 APX Flash" to update first the BL .... i tried MANY options and packages and all were stuck at "second stage : uploading bootloader"
so , i went manually and tried through NvFlash , and tried many possible bootloaders , however all come out with the same error :
Code:
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]
then again , i tried all the update.zip (7 stock ICS packages ) with no success and all failed
how can i upgrade ? ... it's to buggy and annoying that many applications are not ICS restricted only !!
any idea ...help ?
Click to expand...
Click to collapse
you need to reset the partitions on your tab using timmydeansv4 or babsector.rar both of which can be downloaded from the root guide in my sig..try babsector first, if that doesnt do it then:
tdv4 - follow the instructions in the pdf - this will upgrade you to HC 3.2 rooted and cwm,you can then nvflash the bootloader from there or OTA to ICS with the acer enhancer app you tried before
If neither of these things work then you have a faulty motherboard and it will need replacing
actually i tried all that ...
and yes i manged to reach to HC.3.2.1 .....however , once the tablet download the ICS 4.0.3 final update , and reboot for update ....it gets stuck in the ACER logo and fail to boot , till i re-flash the EUU 3.0.1 or HC.3.2.0 US through the SD-Card !!!!!!!
simply i can't pass from HC to ICS otherwise the tablet die ?!!
is it motherboard ?
i feel like my tablet has some sort of conflict with BL of ICS ?
but it was working very well for around 7 months with stock rooted ICS without any failure ?!
what do you think ?
no don't thinks its yr m/b otherwise you'd be having trouble flashing - sometimes its just the OTA -
what to do next, well it depends on what you want
but I'd be going back to HC and flashing the unlocked bootloader v8 - once you have that you can flash either a stock ICS from civato's thread in dev or one of the custom roms
the root guide in my sig should get you where you wanna go - post in there if you need further help
good luck
dibb
I Try to flash my tf101 is giving this error
Nvflash
rcm version 0X4
command send failed (usb write failed)
What do you want us to say?
Congratulations?
Gonna need some more info that that I think
SBK1 or SBK2 etc etc ?
Did you enter APX mode ?
I've already told this guy to stick to one thread but I think they have 4 or 5 by now,
Hello,
First excuse me for my english, my post here is my last chance, i've posted in a french forum but nobody could help me.
My tablet was in a stock rom ics, i've flashed it manually a few days after the release of ics and since i never flash it again.
A day i put my tablet in standby, the day after it was shutted down, when i tried to turn it on i've got this message : "Secure boot : image LNX checksum fail!".
So i tried to turn it on in recovery power button/vol- i've got this message :"Secure boot : image SOS checksum fail!".
I used a tutorial founded here to find my cpuid (ubuntu method) after that i used the "EUUs_SBK_Acer_A500_1.016.05_COM_GEN1" tool to repair my tablet, everything ok, i've got the "PASS" message at the end. So i shut it down and on and now my tablet will boot only in apx mode.
Please help me to unlock my tablet. Thanks.
You should be able to run that EUU again,
Turn tab off and enter apx mode manually using the reset/power button combo. Hook up to yr pc and run the EUU.
Or
use apx flash tool by blackthund3r using bundle 17 from the bundle market inside the app itself. This will flash the unlocked v8 bootloader and cwm so u can flash any custom ics/jb rom. The EUU u used will take u back to stock Acer 3.1.
Good luck!
Sent from my GT-I9300 using Tapatalk 2
Thank you for your answer.
I've tried your second method with apx flash tool. It's blocked here : "Flashing Bootloader (EBT) stage two - uploading image..." and the nvflash command prompt shows "Nvflash started [resume mode]" what can i do ?
Go to the root guide in my sig.
D/l babsector.rar follow these steps here posted by danny2 http://forum.xda-developers.com/showthread.php?t=1624645.....
Sent from my GT-I9300 using Tapatalk 2
I've tried your post 3 in your Beginners Guide - Rooting, Flashing, Unbricking.
Here is the result :
Code:
C:\Users\Arnaud\Desktop\Restore A500\nvflash-A500>nvflash --bct bct.bct --setbct
--bl bootloader.bin --configfile flash.cfg --odmdata 0x300d8011 --sbk 0xE933000
0 0xFF25F106 0xC7061504 0x7C302103 --sync
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 3
chip sku: 0x8
chip uid: 0x0288414542c0d0d7
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:0x4 (0x4) flags: 0
Edit : After that i used Babsector, run A501 A.bat -> everything ok, reboot my tablet still in apx mode impossible to enter recovery, run A501 B.bat -> everything ok but the same problem...
But after i run nvflash and flashed a new bootloader, recovery, new boot with no error but i'm still stuck in apx mode.
Edit2 : I retried the "EUUs_SBK_Acer_A500_1.016.05_COM_GEN1" tool : I've got the Pass message but below in red "Secure boot : image LNX checksum fail!". And when i reboot still stuck in apx.
I don't have much time atm, will post later...but u need to flash an ics rom and do the wipes in between running the 2 bat files...did u do this?
Yr issue is two fold. Being stuck in apx and having the checksum error. And also a partition error...mIt will be a matter of trying the tools until it finally works..it does not sound like a hardware fault, so keep trying....
Oh, Ubuntu works when windows won't...u can run the nvflash command direct from there, see lcd047 solution in cpuid guide.
And you must put yr tab in apx mode using the button combo,
Sent from my GT-I9300 using Tapatalk 2
---------- Post added at 10:40 AM ---------- Previous post was at 10:33 AM ----------
arno911 said:
command failure: sync failed (bad data)
bootloader status: partition table is invalid, missing required information (cod
e: 14) message: nverror:0x4 (0x4) flags: 0
[/CODE]
The 0x4 error....check yr cpuid
Make sure the boot recovery drivers are also installed. ...dl the mini sdk zip in the first post of the cpuid guide
Click to expand...
Click to collapse
dibb_nz said:
[...]u need to flash an ics rom and do the wipes in between running the 2 bat files...did u do this?
Click to expand...
Click to collapse
No i've just launched the 2 bat files. With what tool should i flash the ics rom ?
dibb_nz said:
Oh, Ubuntu works when windows won't...u can run the nvflash command direct from there, see lcd047 solution in cpuid guide.
Click to expand...
Click to collapse
I will try everything under ubuntu now.
Edit : I didn't find how to run nvflash under ubuntu...
dibb_nz said:
And you must put yr tab in apx mode using the button combo
Click to expand...
Click to collapse
Can you explain me this method ? Before i was stucked in apx mode i entered this mode by pressing the reset button + power button 3 seconds. And now i didn't even need to press the reset button my tablet boot on directly in apx mode and is recognized so in windows.
dibb_nz said:
The 0x4 error....check yr cpuid
Click to expand...
Click to collapse
How can i check it ? I got it under ubuntu the only method possible for me.
dibb_nz said:
Make sure the boot recovery drivers are also installed. ...dl the mini sdk zip in the first post of the cpuid guide
Click to expand...
Click to collapse
I don't know how to do that... I have downloaded the mini sdk zip what should i do with ?
Edit : I tried with "V8-UNL-ICS-HC-bootloader-MULTI-cwm" and have a new error maybe it can help...
Code:
**********************************************************
* Press any key when your A500 is in bootloader mode *
**********************************************************
Appuyez sur une touche pour continuer...
Flashing HC-Bootloader...
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]
arno911 said:
How can i check it ? I got it under ubuntu the only method possible for me.
Click to expand...
Click to collapse
The SBK is fine.
If it was not, nvflash would fail already on getting the system information.
Code:
**********************************************************
* Press any key when your A500 is in bootloader mode *
**********************************************************
Appuyez sur une touche pour continuer...
[COLOR="Red"]Flashing HC-Bootloader...[/COLOR]
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]
Flashing HC-Bootloader???????
Next thing, are u putting your tab in apx mode before you do this???
"...If your tab does not dispay text like "Acer Iconia a500 Download Mode then your tab is not in "apx mode"
i know all thes modes are confusing, but your tab must display "download mode" for the flash to be successful.
There is a great solution recently posted by another user, who like you, got stuck in apx mode....he used nvflash with ubuntu and has written a post on how he went about it....http://forum.xda-developers.com/showthread.php?p=39673261#post39673261
Put your tab in APX Mode
You enter APX mode by holding down the Reset button(with paper clip).
Do not release it.
Hold down power for 3 secs and then release it.
After another second, release the reset button.
Your Windows PC should then detect your device and install the APX driver. You should then have an APX USB device installed.
If you do not have an APX USB device listed in your system tray, you cannot proceed.
The screen of your tablet is black and the Power Light is ON.
dibb_nz said:
There is a great solution recently posted by another user, who like you, got stuck in apx mode....he used nvflash with ubuntu and has written a post on how he went about it....http://forum.xda-developers.com/show...1#post39673261
Click to expand...
Click to collapse
Yes i've just saw it and try. But the same error occured :
Code:
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 3
chip sku: 0x8
chip uid: 0x0288414542c0d0d7
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
dibb_nz said:
Flashing HC-Bootloader???????
Next thing, are u putting your tab in apx mode before you do this???
"...If your tab does not dispay text like "Acer Iconia a500 Download Mode then your tab is not in "apx mode"
Click to expand...
Click to collapse
Yes my tab was in apx mode at this moment.
How to know if the problem is not hardware, I'm starting to lose hope...
In the past I has installed several custom ROMs on my A500. Mostly civato's variants. I most recently had CM10-FLEX_V6Supercharged_Rev3.3 installed with the v8 ICS Bootloader.
I then tried to do a dirty install of CM10-FLEX_V6Supercharged_Rev3.4. The thought that this would be ok as it was only a single dot release.
The a500 booted and things appeared to be normal. I did not do a whole lot with the tablet at the time. Later I came back and found the tablet was off. When I tried to reboot, I got stuck at the v8 bootloader screen.
Next I figured I might as well put the v9 bootloader on, wipe everything out, and do a clean install of CM10-FLEX_V6Supercharged_Rev3.4.
Upon first boot, the exact thing happened, except this time the table was stuck on the v9 boot screen.
The is when the journey began. I have tried about everything I have been able to find. I have had times where the only thing that works on my tablet is manual APX mode.
The only thing that somewhat works consistently to bring the table back to life is using Timothy's Tool (not sure why this nvflash is different), and running this command:
nvflash --bct flash.bct --setbct --odmdata 0x100c0105 --configfile flash.cfg --create --bl bootloader.bin --sbk <mykey> --go
Most times this will get me to a stock-like ROM. Sometimes the nvflash fails. At different spots, so I do not know what is going on there. The most frequent error is the below error, right after checksum.img sent successfully:
failed executing command 25 NvError 0x120002
command failure: sync failed (bad data)
bootloader status: Bct Write Failed (code: 22) message: nverror:0x42008 (0x6042008) flags: 0
If the flash is successful, I can boot stock rom.
From there I try a myriad of things to put on a patched custom boot loader. I have used the apxflash tool, and nvflash with several of the .bat files you can find. It looks like I can get v8 and v9 of the ICS boot loader installed and can still boot the stock ROM that gets installed with Timorthy's tool. With either the v8 or v9 bootloader installed I can boot stock rom, custom recovery, or quickboot menu.
From there is where things are bad. I have tried to install several custom ROMs from Recovery (Thor 1.7.3) and they appear to install fine. The aroma installer installs the ROMs. If I try to format a file-system (ie., /system,/data,/cache,/flexrom) those all appear to work fine. Unfortunately after I install any custom ROM (RE-FLEXxx-ShellSHOCK-Rev7.0-CuZ-Edition, CM10-FLEX_V6Supercharged_Rev3.4, CM10-FLEX_V6Supercharged_Rev3.3, cm-10.1-20130606-UNOFFICIAL-a500), the same thing happens. I get stuck at the boot screen where it is trying to boot the primary kernel image. It does not matter if v8 or v9 of the Bootloader is installed. The exact same thing happens.
I have been down every rabbit hole I have been able to find, but I cannot find a solution. Has anyone else run into this issue? Anyone have any suggestions?
Thank You.
gemneye said:
In the past I has installed several custom ROMs on my A500. Mostly civato's variants. I most recently had CM10-FLEX_V6Supercharged_Rev3.3 installed with the v8 ICS Bootloader.
I then tried to do a dirty install of CM10-FLEX_V6Supercharged_Rev3.4. The thought that this would be ok as it was only a single dot release.
The a500 booted and things appeared to be normal. I did not do a whole lot with the tablet at the time. Later I came back and found the tablet was off. When I tried to reboot, I got stuck at the v8 bootloader screen.
Next I figured I might as well put the v9 bootloader on, wipe everything out, and do a clean install of CM10-FLEX_V6Supercharged_Rev3.4.
Upon first boot, the exact thing happened, except this time the table was stuck on the v9 boot screen.
The is when the journey began. I have tried about everything I have been able to find. I have had times where the only thing that works on my tablet is manual APX mode.
The only thing that somewhat works consistently to bring the table back to life is using Timothy's Tool (not sure why this nvflash is different), and running this command:
nvflash --bct flash.bct --setbct --odmdata 0x100c0105 --configfile flash.cfg --create --bl bootloader.bin --sbk <mykey> --go
Most times this will get me to a stock-like ROM. Sometimes the nvflash fails. At different spots, so I do not know what is going on there. The most frequent error is the below error, right after checksum.img sent successfully:
failed executing command 25 NvError 0x120002
command failure: sync failed (bad data)
bootloader status: Bct Write Failed (code: 22) message: nverror:0x42008 (0x6042008) flags: 0
If the flash is successful, I can boot stock rom.
From there I try a myriad of things to put on a patched custom boot loader. I have used the apxflash tool, and nvflash with several of the .bat files you can find. It looks like I can get v8 and v9 of the ICS boot loader installed and can still boot the stock ROM that gets installed with Timorthy's tool. With either the v8 or v9 bootloader installed I can boot stock rom, custom recovery, or quickboot menu.
From there is where things are bad. I have tried to install several custom ROMs from Recovery (Thor 1.7.3) and they appear to install fine. The aroma installer installs the ROMs. If I try to format a file-system (ie., /system,/data,/cache,/flexrom) those all appear to work fine. Unfortunately after I install any custom ROM (RE-FLEXxx-ShellSHOCK-Rev7.0-CuZ-Edition, CM10-FLEX_V6Supercharged_Rev3.4, CM10-FLEX_V6Supercharged_Rev3.3, cm-10.1-20130606-UNOFFICIAL-a500), the same thing happens. I get stuck at the boot screen where it is trying to boot the primary kernel image. It does not matter if v8 or v9 of the Bootloader is installed. The exact same thing happens.
I have been down every rabbit hole I have been able to find, but I cannot find a solution. Has anyone else run into this issue? Anyone have any suggestions?
Thank You.
Click to expand...
Click to collapse
Ok to start off.....
timmy deans euu tool. If u run this and its successful you will be back to stock HC 3.2.1. You will be rooted and you will have cwm recovery mode.
Now, once u r back on HC, you can now begin to think about which rom you want to install. Put it on yr ext sd card. With the troubs you are having try civatos pre-rooted stock ics rom.
Next step is to flash the v8. Use the apxflash method.
Choose to dump yr own bct....
Once you get the PASS...boot direct to recovery mode and complete the full wipes....then flash the rom...done!!!
If you complete each step as it is written here you should be good.
Good luck
dibb
Sent from my GT-I9300 using Tapatalk 4 Beta
dibb_nz said:
Ok to start off.....
timmy deans euu tool. If u run this and its successful you will be back to stock HC 3.2.1. You will be rooted and you will have cwm recovery mode.
Now, once u r back on HC, you can now begin to think about which rom you want to install. Put it on yr ext sd card. With the troubs you are having try civatos pre-rooted stock ics rom.
Next step is to flash the v8. Use the apxflash method.
Choose to dump yr own bct....
Once you get the PASS...boot direct to recovery mode and complete the full wipes....then flash the rom...done!!!
If you complete each step as it is written here you should be good.
Good luck
dibb
Click to expand...
Click to collapse
Yes, I have been down every one of those steps as mentioned in my first post. I can not run timmy deans euu tool (root-3.2.1_v4) as documented, because I can not boot my tablet. What I can do is change to the Image directory on Timmy dean's tool, and manually run --
nvflash --bct flash.bct --setbct --odmdata 0x100c0105 --configfile flash.cfg --create --bl bootloader.bin --sbk <my_key> --go
I have gotten stock booting from v8 and v9 patched boot loaders. It is the next step after that. I do a wipe (factory reset). Do a "real" delete of /data, and go through the Aroma installer (which appears to finish without any problem).
When I boot, it never gets past the bootloader screen. It does not go black or anything. It just shows the booting primary kernel image message and hangs.
Now, I am not even able to run the nvflash command. I am starting to wonder if there is a hardware storage problem. I can't even create the partitons.
After u run timmydeans, can u boot to the OS
Sent from my GT-I9300 using Tapatalk 4 Beta
---------- Post added at 06:12 AM ---------- Previous post was at 06:00 AM ----------
gemneye said:
...
It is the next step after that. I do a wipe (factory reset). Do a "real" delete of /data, and go through the Aroma installer (which appears to finish without any problem).
When I boot, it never gets past the bootloader screen. It does not go black or anything. It just shows the booting primary kernel image message and hangs.
.
Click to expand...
Click to collapse
Tell me which recovery you sre using...cwm 1.7.3 works best. Forget aroma and use that pre rooted stock rom until we get u sorted.
I know u said youve done everything over and over but please run thru those steps EXACTLY as i wrote them
Yes it maybe the chip...can't tell without nvflash output...the only one u posted showed bct error....which apxflash tool fixes
Sent from my GT-I9300 using Tapatalk 4 Beta
About to throw in the towel
dibb_nz said:
After u run timmydeans, can u boot to the OS
---------- Post added at 06:12 AM ---------- Previous post was at 06:00 AM ----------
Click to expand...
Click to collapse
After Timmy's tool, I was able to boot just fine. I got to this point a few times. There was no patched boot loader or no custom recovery. Basically I had a bootable tablet running what looked to be a STOCK ROM.
I could then install v8 or v9 patched ICS loader and custom recovery (CWM THOR 1.7.3). I could boot custom recovery (Vol-down + Power), Quick Menu (Vol-up + Power), or the Stock ROM (Primary Kernel Image). This would work consistently.
Then I would install a custom ROM (tried many of them, even ones that had worked previously) and I could never get the ROM to boot. I would get stuck on the boot loader screen stating Primary Kernel was trying to boot.
Since then I can no longer use Timmy's tool. I am now consistently getting this error:
Formatting partition 2 BCT please wait.. FAILED!
command failure: create failed (bad data)
bootloader status: specified partition is invalid or does not exist (code: 7) message: nverror:0x42008 (0x6042008) flags: 0
Except for getting the tablet to boot a few times after using Timmy's tool, I would venture to guess there is an underlying hardware issue. Once I had it booted to Stock I think it gave me false hope. Now that I am consistently getting storage device type errors using different combinations of nvflash, I am thinking there might be a more serious issue.
I just spent half an hour on a reply, and its not showing. ...grrrrr ... its past my bedtime so I'll get bsck to you in the morning! !!
Sent from my GT-I9300 using Tapatalk 4 Beta
gemneye said:
The only thing that somewhat works consistently to bring the table back to life is using Timothy's Tool (not sure why this nvflash is different), and running this command:
nvflash --bct flash.bct --setbct --odmdata 0x100c0105 --configfile flash.cfg --create --bl bootloader.bin --sbk <mykey> --go
Click to expand...
Click to collapse
This was the only thing that worked to get my a500 out of APX mode! I thought for sure she was a gonner.
dibb_nz said:
Ok to start off.....
timmy deans euu tool. If u run this and its successful you will be back to stock HC 3.2.1. You will be rooted and you will have cwm recovery mode.
Now, once u r back on HC, you can now begin to think about which rom you want to install. Put it on yr ext sd card. With the troubs you are having try civatos pre-rooted stock ics rom.
Next step is to flash the v8. Use the apxflash method.
Choose to dump yr own bct....
Once you get the PASS...boot direct to recovery mode and complete the full wipes....then flash the rom...done!!!
If you complete each step as it is written here you should be good.
Good luck
dibb
Click to expand...
Click to collapse
I have the similar issue to gemneye.
I can use timmy deans euu tool to get to stock hc 3.2.1 and can boot without issues.
I can flash the v8 using apxflash and I install cwm thor 1.7.3.
Still boots up fine after flashing v8/recovery.
No matter what rom I install at this point I am stuck at the screen with "Booting primary kernel image". Even civato's stock rom won't go past this screen.
The only part of your instructions that I have an error is when trying to dumb the bct. I would have to guess that this is the reason I'm stuck. While trying to dumb the bct APX Flash tool pops up and says "Could not find file bct.dec" I can't find any other tool to fix the bct. Any ideas?
RedOmega said:
I have the similar issue to gemneye.
I can use timmy deans euu tool to get to stock hc 3.2.1 and can boot without issues.
I can flash the v8 using apxflash and I install cwm thor 1.7.3.
Still boots up fine after flashing v8/recovery.
No matter what rom I install at this point I am stuck at the screen with "Booting primary kernel image". Even civato's stock rom won't go past this screen.
The only part of your instructions that I have an error is when trying to dumb the bct. I would have to guess that this is the reason I'm stuck. While trying to dumb the bct APX Flash tool pops up and says "Could not find file bct.dec" I can't find any other tool to fix the bct. Any ideas?
Click to expand...
Click to collapse
There is a specific order to doing things successfully with the Acer, any deviation at all and things wont work as they should. You must flash your rom directly after flashing the v8.
Flash the v8/cwm 1.7.3
Boot directly to cwm and complete a full wipe
Flash your rom
reboot.
If u run the v8 from HC and reboot without flashing an ICS rom first you will get stuck with booting primary kernel image...Why?? cos you have HC rom with the unlocked bootloader - the unlocked bootloader will only work with ICS/JB roms!! I'm assuming this is the reason for the "bct.dec" error as well. Try it again in the order I posted above
dibb_nz said:
There is a specific order to doing things successfully with the Acer, any deviation at all and things wont work as they should. You must flash your rom directly after flashing the v8.
Flash the v8/cwm 1.7.3
Boot directly to cwm and complete a full wipe
Flash your rom
reboot.
If u run the v8 from HC and reboot without flashing an ICS rom first you will get stuck with booting primary kernel image...Why?? cos you have HC rom with the unlocked bootloader - the unlocked bootloader will only work with ICS/JB roms!! I'm assuming this is the reason for the "bct.dec" error as well. Try it again in the order I posted above
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Click to collapse
Keep getting format errors when trying to flash anything now. APXFlash would hang repeatedly when trying to flash v8/cwm 1.7.3. Couldn't see any error messages in the cmd windows/debug but some of them closed so fast I may have missed it. So I went back to trying the manual return to 3.2.1 that OP used earlier and now I can't even get that to complete without errors.
nvflash --bct flash.bct --setbct --odmdata 0x100c0105 --configfile flash.cfg --crea
te --bl bootloader.bin --sbk 0x4CA71E00 0x74B3D706 0x9BFA3304 0xA02A2103 --go
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 3
chip sku: 0x8
chip uid: 0x037c61c04240f357
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: specified partition is invalid or does not exist (code: 7) me
ssage: nverror:0x42008 (0x6042008) flags: 0
I've tried babsector and manuall install of v8 using v8.bat as well and get error messages with those too.
Babsector gives me this:
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
v8.bat gives me some different errors:
Loading bootloader...
Nvflash started
rcm version 0X20001
System Information:
chip name: t20
chip id: 0x20 major: 1 minor: 3
chip sku: 0x8
chip uid: 0x037c61c04240f357
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: Bct Write Failed (code: 22) message: nverror:0x42004 (0x42004
) flags: 0
*****************************************************************
* Press any key when your A500/501/G100W is in bootloader mode *
*****************************************************************
Press any key to continue . . .
Flashing bootloader: bootloader_v8.bin ...
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
Reading some of your replies in other posts Dibb, I'm guessing you'd say memory chip issue and that tab is toast?
Oh darn
Yep your conclusions are correct.
Maybe pickup new one off ebay they were going reasonably cheap awhile back sub US$80???
Sent from my GT-I9300 using Tapatalk 4
Hi everyone !
I searched for a case like mine on the forum, but didn't find a solution to my problem, so you're my last hopes !
I have a Nexus 7 (2012) WIFI for a while now and I wanted to return to stock, on Lollipop (I was on Paranoid Android ROM, 4.4.4).
So, l used the Nexus Root Toolkit and ran the "return to stock + unroot" feature.
I downloaded the last google image for my device (5.0.2) and let the thing began.
It erases all partitions like it has to do, but when it needs to write bootloader, it fails and says: "FAILED (command write failed (Unknown error))".
I tried severals time, but always same problem. So I tried to flash stock 4.4.4, but can't write bootloader too: "FAILED (No suck device)" or "FAILED (too many links)" errors appear, something like those.
So, in last hopes, I tried to do this manually and followed this thread: http://forum.xda-developers.com/showthread.php?t=1907796
I erased correctly all partitions, but when I need to flash bootloader with "fastboot flash bootloader bootloader-tilapia-4.23.img" command, I get "FAILED (command write failed (Unknown error))" too...
I can't flash recovery, get the same error as the bootloader one...
If someone had the same problem or if someone can help me to restore my Nexus 7, it would be very kind !
Thanks to everyone who'll read this
Also have the same problem generated by the very same software!!
Anyone have any further info please?
MiMilz said:
Hi everyone !
I searched for a case like mine on the forum, but didn't find a solution to my problem, so you're my last hopes !
I have a Nexus 7 (2012) WIFI for a while now and I wanted to return to stock, on Lollipop (I was on Paranoid Android ROM, 4.4.4).
So, l used the Nexus Root Toolkit and ran the "return to stock + unroot" feature.
I downloaded the last google image for my device (5.0.2) and let the thing began.
It erases all partitions like it has to do, but when it needs to write bootloader, it fails and says: "FAILED (command write failed (Unknown error))".
I tried severals time, but always same problem. So I tried to flash stock 4.4.4, but can't write bootloader too: "FAILED (No suck device)" or "FAILED (too many links)" errors appear, something like those.
So, in last hopes, I tried to do this manually and followed this thread: http://forum.xda-developers.com/showthread.php?t=1907796
I erased correctly all partitions, but when I need to flash bootloader with "fastboot flash bootloader bootloader-tilapia-4.23.img" command, I get "FAILED (command write failed (Unknown error))" too...
I can't flash recovery, get the same error as the bootloader one...
If someone had the same problem or if someone can help me to restore my Nexus 7, it would be very kind !
Thanks to everyone who'll read this
Click to expand...
Click to collapse
PaulG2000 said:
Also have the same problem generated by the very same software!!
Anyone have any further info please?
Click to expand...
Click to collapse
It's pretty well known that for some reason, the bootloader images included on many of the factory images for grouper are not valid, and Google has never corrected this. You'll need to grab a valid bootloader from a different factory image, and flash it manually.
Check this thread out, it's all been covered in great detail there: http://forum.xda-developers.com/showthread.php?t=2573015
Edit: Also, if you're already on a valid bootloader version 4.23, then there's no need to flash the bootloader again.