Database Users

[Q] secure boot img SOS check sum fail!

Hi
I am currently trying to install thor_rom_v14.2.zip (ROM) to my
Pb liberty tab said to be the same as acer iconia A500.
The stuck version is android is 3.0.1
But every time I try to start it in recovery mode I get
"secure boot img SOS check sum fail!" and the boot process stops.
I've rooted it with gengerbreak
installed ROM manager from app store. It does not recognize the product under the installation and asks me to confirm that it is an asus transfomer which I did although it was certainly not an asus trnasformer. All the things I tried with ClockworkMod Recovery (CWM) led only to a boot that stopped by "Secure boot img SOS check sum fail!"
So I tried with acer recovery install v2.74. But here I got exactly same result. I could not get past the "secure boot img SOS check sum fail!".
So my question obviously is. How do I get about this "Secure boot img SOS check sum fail!"
Should I perhaps get hold of an older version of the Acer Recovery Installer that has ClockworkMod Recovery rev.1.3.4 by thor2002ro with it? If yes how to I get it?
Other proposals... could I do this in a completely different manner? like from a USB connection from a remote computer or with Unix dd command or???.. How could I get about this?
/Mikkel

[Q] Boot verified failed and APX driver problem

Hi!
I have tried to flash unlocked bootloader V3 from civato's guide, and I could not pass step 6 (flashing bootloader with nvflash or blacthund3r's tool). None of this method didn't work (Nvflasher didn't flash anything, and blackthunder tool was stuck at formating some partition (can't remeber which one).
Last successful step was flashing ICS rom (full leaked version of 1.031.00).
After that I could boot up, and rom worked all fine.
But, after that, I got my self in trouble.... I pressed Vol- & PWR, tablet did his thing, and when reeboted, I got stuck in Acer logo screen with red writing "Boot verified failed"
I understand that I have messed boot somehow... And to fix this i have to flash new bootloader through nvflash and apx mode. I tried to put update.zip on sd card, but it didn't helped (I still get boot verified failed)
Here, I got another problem. When I have connected tablet in apx mod to pc, i got message "driver not installed". Now, in devices I have "unspecified APX device".
BTW, adb doesn't see my device?!
I hope that You guys can help me with these problems, so that my tablet is operational an running again.
Thanks in advance!

boot verified
I have the same problem but I can not find the v3 bl and CWM Recovery Package to flash with the apx flash utility. If you find them let me know.
This what you have do:
Your recovery is borked so u have to put a new one on there, the best way to
go about doing this is to:
Download the V3 AND CWM Recovery package and apxFlash that.....Done!!
your need to flash the WHOLE PACKAGE b/c ARI reports yr BL as plain old stock
You cannot replace the failed recovery with CWM with the plain old stock BL!!
You have to flash the patched BL as well, so again
You must flash the whole pckg just like in the guide OK
if later u want the stock recovery back u can use ARI to do that but after the apxflash!!!

Thanks for your replay! I'l try to do this and hope it will work...
By "WHOLE PACKAGE" you mean unlocked bootloader and CWM? Or, something else?
Check this thread for V3 and CWM.

boot verified
Yes "WHOLE PACKAGE" unlocked bootloader and CWM
The tread you sent me I do not know how to use the nvflash never works for me.
I have been trying for 3 days and no luck.
Let me know if it works for you or how you make out

zozo10k said:
Hi!
I have tried to flash unlocked bootloader V3 from civato's guide, and I could not pass step 6 (flashing bootloader with nvflash or blacthund3r's tool). None of this method didn't work (Nvflasher didn't flash anything, and blackthunder tool was stuck at formating some partition (can't remeber which one).
Last successful step was flashing ICS rom (full leaked version of 1.031.00).
After that I could boot up, and rom worked all fine.
But, after that, I got my self in trouble.... I pressed Vol- & PWR, tablet did his thing, and when reeboted, I got stuck in Acer logo screen with red writing "Boot verified failed"
I understand that I have messed boot somehow... And to fix this i have to flash new bootloader through nvflash and apx mode. I tried to put update.zip on sd card, but it didn't helped (I still get boot verified failed)
Here, I got another problem. When I have connected tablet in apx mod to pc, i got message "driver not installed". Now, in devices I have "unspecified APX device".
BTW, adb doesn't see my device?!
I hope that You guys can help me with these problems, so that my tablet is operational an running again.
Thanks in advance!
Click to expand...
Click to collapse
Did you install acer usb drivers.

EDIT: SOLVED!
Mods, you can close this thread.
shaun298 said:
Did you install acer usb drivers.
Click to expand...
Click to collapse
Hi!
Yes, I have dl the drivers from Acer site and installed them. But pc only recognize tab in APX mode. And adb doesn't see my tab.
Every method that I have tried (APX flash tool and nvflash) hangs at some part. APX flash tool hangs at "Flashing bootloader EBT - stage two, and nvflash hangs at formating partition 4.

Hi, I´m having similar troubles to get acer drivers working on windows 7 32. I installed newest acer web drivers, ADB works OK. When I get to apx mode I need to manually point to drivers, I have an APX driver with a sign and turns to Acer Picasso USB Boot-recovery driver. The problem is that not any of the tools sees this as a connected tablet in apx mode (afterota or apxflash).
I am doing something wrong? I know a500manager shows me the tablet is in apx mode "please install drivers" when i get APX driver with Sign, after installing the driver manually it just doesn´t show connected anymore.
thanks

hernborc said:
Hi, I´m having similar troubles to get acer drivers working on windows 7 32. I installed newest acer web drivers, ADB works OK. When I get to apx mode I need to manually point to drivers, I have an APX driver with a sign and turns to Acer Picasso USB Boot-recovery driver. The problem is that not any of the tools sees this as a connected tablet in apx mode (afterota or apxflash).
I am doing something wrong? I know a500manager shows me the tablet is in apx mode "please install drivers" when i get APX driver with Sign, after installing the driver manually it just doesn´t show connected anymore.
thanks
Click to expand...
Click to collapse
Download and install the Google USB drivers.
Google.... Android USB Drivers, and you should get the page for the Android SDK with google drivers.
In Apx mode, go to device manager on your PC, and manually install the drivers. Don't let it search automatically, do it manually. If you get a compatibility warning, ignore it.
Should hook you up with normal, ADB and APX drivers.

zozo10k said:
EDIT: SOLVED!
Mods, you can close this thread.
Hi!
Yes, I have dl the drivers from Acer site and installed them. But pc only recognize tab in APX mode. And adb doesn't see my tab.
Every method that I have tried (APX flash tool and nvflash) hangs at some part. APX flash tool hangs at "Flashing bootloader EBT - stage two, and nvflash hangs at formating partition 4.
Click to expand...
Click to collapse
THANKS FOR NOT TELLING US HOW YOU SOLVED IT:good::good::good::good:

Boot verified failed after update PLEADE HELP

Hello,
I have a big huge problem so i havent slep all night but i cant resolve it.
I was fist on ICS official, so i want go back i have treid AfterOta
I have use Afterota and install HC bootloader, that gone okay, but whe i put a rom for my A501 its update wel after the update
it wont start anymore it gives Boot veriefied failed.
Then i try several Rom putteing on the sd kart but it not flashing anymore.
I am stuck now, please can anyone help me...:crying:

cebbes30 said:
Hello,
I have a big huge problem so i havent slep all night but i cant resolve it.
I was fist on ICS official, so i want go back i have treid AfterOta
I have use Afterota and install HC bootloader, that gone okay, but whe i put a rom for my A501 its update wel after the update
it wont start anymore it gives Boot veriefied failed.
Then i try several Rom putteing on the sd kart but it not flashing anymore.
I am stuck now, please can anyone help me...:crying:
Click to expand...
Click to collapse
To get back to stock you'll need to run an official a501 EUU - theres a thread in the dev forum by blackthund3r with a list of official Acer Roms -
you need an "EUU" AND I hope you have saved your cpuid from using afterOTA - you can't do anything now without it
dibb

I have download a full rom A501 first and install thats work great after booting up it wont start and give the error.
Yes i have olso save my Acer id tekst with spuid serial number like that.
But can you tell me which one i need to install a full or Euu
QUOTE=dibb_nz;36135657]To get back to stock you'll need to run an official a501 EUU - theres a thread in the dev forum by blackthund3r with a list of official Acer Roms -
you need an "EUU" AND I hope you have saved your cpuid from using afterOTA - you can't do anything now without it
dibb[/QUOTE]

theres only this one, which will take you all the way back to HC3.0.1
EUUs_SBK_Acer_A501_0.017.01_PA_ATT:
- if moscow desire is around he may be able to point you to a more recent version, but I havent seen him about lately he may be taking a well deserved holiday

The link for this is not working?
Any other options?
EUUs_SBK_Acer_A501_0.017.01_PA_ATT:
- if moscow desire is around he may be able to point you to a more recent version, but I havent seen him about lately he may be taking a well deserved holiday[/QUOTE]

Skrilax_CZ`s bootloader V8 Boot Menu HELP
Hello
I have come littel further, so i am now on the Skrilax_CZ`s bootloader V8 Bootmenu mode
option
Reboot
Fastboot Mode
Boot Primary Kernel Image
Boot Secondary Kernel Image
Boot Recovery
Set Boot Secondary kernel Image
Set Debug mode on
Wipe Cache.
So cany anyone tel me what i must do to root and install CWM recovery
so i can install then after custom roms?
I am nou again stuck

cebbes30 said:
Hello
I have come littel further, so i am now on the Skrilax_CZ`s bootloader V8 Bootmenu mode
option
Reboot
Fastboot Mode
Boot Primary Kernel Image
Boot Secondary Kernel Image
Boot Recovery
Set Boot Secondary kernel Image
Set Debug mode on
Wipe Cache.
So cany anyone tel me what i must do to root and install CWM recovery
so i can install then after custom roms?
I am nou again stuck
Click to expand...
Click to collapse
Well, that is good news, you're halfway there
This tutorial will give you some background on rooting and installing CWM http://forum.xda-developers.com/showthread.php?p=35500631#post35500631
But now you have the v8 and access to fastboot the first thing you should do is to hook your usb cable to your pc and run a command prompt from the fastboot folder (if you need help with doing that have a look in the cpuid guide linked in my sig). You want to wipe /data and /cache and then immediately flash an ICS custom rom...civato has a thread with official acer stock roms that will run on the v8 or you can choose a full custom one.
You should already have a custom recovery on your tab, if not, use fastboot to flash one after you did your wipes...then boot to it and flash your rom not an update.zip

i have hook the usb cable but i cant write somthing on the cmd
its noet working, i want to install CWM this was verry easy to use.
I dont now why its verry difficult to root and install a custom firmware on a Acer Iconia A500.
I have olso a Samsung galaxy tab, this was veryy easy to use after 3 minutes it was rooted and installed the CWM.

Boot verified failed and recovery verified failed
Hi Guys,
My Acer A500 is completely bricked, when i tried to enter the recovery mode (Volume - + Power) i am receiving recovery verified failed and when i try to reboot the tablet it says Boot verified failed, could you please help me in recovering the tablet.
cebbes30 said:
Hello,
I have a big huge problem so i havent slep all night but i cant resolve it.
I was fist on ICS official, so i want go back i have treid AfterOta
I have use Afterota and install HC bootloader, that gone okay, but whe i put a rom for my A501 its update wel after the update
it wont start anymore it gives Boot veriefied failed.
Then i try several Rom putteing on the sd kart but it not flashing anymore.
I am stuck now, please can anyone help me...:crying:
Click to expand...
Click to collapse

@ cebbes
Go to cpuid guide in my sig
You'll need the drivers installed correctly, there's a section showing how to do that....you'll need to flash the v8 bootloader to get cwm...its all in the guide
Sent from my GT-I9300 using Tapatalk 2
---------- Post added at 05:42 PM ---------- Previous post was at 05:35 PM ----------
jaga_n_jaga said:
Hi Guys,
My Acer A500 is completely bricked, when i tried to enter the recovery mode (Volume - + Power) i am receiving recovery verified failed and when i try to reboot the tablet it says Boot verified failed, could you please help me in recovering the tablet.
Click to expand...
Click to collapse
Hope you saved yr cpuid somewhere, you'll need it....
What Rom's did u flash??
u need to downggrade to hc using an euu. Download and instructions in the root guide in my sig
Sent from my GT-I9300 using Tapatalk 2

dibb_nz said:
Well, that is good news, you're halfway there
This tutorial will give you some background on rooting and installing CWM http://forum.xda-developers.com/showthread.php?p=35500631#post35500631
But now you have the v8 and access to fastboot the first thing you should do is to hook your usb cable to your pc and run a command prompt from the fastboot folder (if you need help with doing that have a look in the cpuid guide linked in my sig). You want to wipe /data and /cache and then immediately flash an ICS custom rom...civato has a thread with official acer stock roms that will run on the v8 or you can choose a full custom one.
You should already have a custom recovery on your tab, if not, use fastboot to flash one after you did your wipes...then boot to it and flash your rom not an update.zip
Click to expand...
Click to collapse
First to thanks to dibb_nz, civato, Moscow Desire & Heisenberg.
I have installed Skrilax CZ bootloader V8 on my TAB ( after six month trying )
Then Installed: CWM recovery v5.5 thor2002ro rev.1.7.3
showing: kernel 3.1.10-digetx-thor-4.4micro
Bootloader: 0.03.14-MUL
Active boot partition 1st boot partition set as default.
Not running HC bootloader, itsmagic not needed.
As per your instruction on (Skrilax CZ bootloader V8) wipes all the /data and /cache using fastboot method then reboot and after going to CWM recovery flashed Civato official acer Rom Acer_AV041_A500_1.041.00_WW_CUS1 from here http://forum.xda-developers.com/showthread.php?t=1633907.
But again my Tab is stuck on Skrilax CZ bootloader V8 bootmenu.
now help me what to do.

[Q] My Acer A500 starts only in the Team Win Recoverey twrp v2.4.0.0 modes.

Is there anyone who can explain to me how I can remove Team Win Recoverey twrp v2.4.0.0 and how to install afterwards Team Win Recoverey twrp v2.1.3.
My Acer A500 starts only in the Team Win Recoverey twrp v2.4.0.0 modes.
Backups are on the tablet and on the external sd card but it is not possible to install them.
Error error ......
After a reboot I see: "Secure boot: image checksum Link Fail!"
I want to install ROM "CM10-FLEX_V6Supercharged_Rev2.3_GappsIncl_Public " but this is not possible with twrp v2.4.0.0.
To install TWP 2.1.3-Triumph.zip with twrp v2.4.0.0 gives "Failed".
--------------------------------------------------------
17-02-2013
I tried to install:
- Ezterry A500's Pub Recover
- Thor 1.7.3
- Ra-recovery 3.17 (recovery-ra-Iconia-3.17-GNM)
During a Reboot each time TWRP 2.4.0.0. is the only one to start so I can't install anything else.
------------------------------------------------------------------------------
18-02-2013
I also tried:
- The hard reset.
- The reset with a paper clip.
- Several other ROMs but these do not work with twrp v2.4.0.0. Only ROM "Acer A500 Slim 01-14-2013 (1st Release)" should work. But unfortunately I can only see the ACER logo. Even after 1 night waiting you still see the ACER logo.
- Start all over with "Blackthund3r_A500_A501_CWM_Root_v2" software is also unsuccessful.
During a Reboot each time TWRP 2.4.0.0. is the only one to start.
I'm doing something wrong but??
-----------------------------------------------------------------------
19-02-2013
I tried:
USAGE-FLOW CHART http://forum.xda-developers.com/showthread.php?t=1816560
- Different stock ROMs. Name change to update.zip
But still, the error message "Secure boot: image LNX checksum fail!"
Only a boot with recovery "twrp v2.4.0.0" still succeeds.
This gives a error message "Unable to locate zip file '/ sdcard / SDCARD: update.zip".
E: Error installing zip file '/ sdcard / SDCARD: update.zip ".
Is there anyone who can help me. It doesn't matter anymore what rom I put on as long as it works.
Thanks for any help

Albert50 said:
Is there anyone who can explain to me how I can remove Team Win Recoverey twrp v2.4.0.0 and how to install afterwards Team Win Recoverey twrp v2.1.3.
My Acer A500 starts only in the Team Win Recoverey twrp v2.4.0.0 modes.
Backups are on the tablet and on the external sd card but it is not possible to install them.
Error error ......
After a reboot I see: "Secure boot: image checksum Link Fail!"
I want to install ROM "CM10-FLEX_V6Supercharged_Rev2.3_GappsIncl_Public " but this is not possible with twrp v2.4.0.0.
To install TWP 2.1.3-Triumph.zip with twrp v2.4.0.0 gives "Failed".
Click to expand...
Click to collapse
Can you install THOR's 1.73 recovery? If so, then you should be able to flash the ROM you mention, That's how I did mine.

I tried to install:
- Ezterry A500's Pub Recover
- Thor 1.7.3
- Ra-recovery 3.17 (recovery-ra-Iconia-3.17-GNM)
During a Reboot each time TWRP 2.4.0.0. is the only one to start so I can't install anything else.
What should I do?
Thanks for any help.

You'll lose all data, so pop out your external micro card, but you might want to try the hard reset...the one where you toggle the orientation button. Have you tried that?

I also tried:
- The hard reset.
- The reset with a paper clip.
- Several other ROMs but these do not work with twrp v2.4.0.0. Only ROM "Acer A500 Slim 01-14-2013 (1st Release)" should work. But unfortunately I can only see the ACER logo. Even after 1 night waiting you still see the ACER logo.
- Start all over with "Blackthund3r_A500_A501_CWM_Root_v2" software is also unsuccessful.
During a Reboot each time TWRP 2.4.0.0. is the only one to start.
I'm doing something wrong but??
What should I do?
Thanks for any help.

Have you tried flashing a "back to stock ROM". That would also install the stock recovery and remove root. There are XDA threads on this.
Good luck...I hope you get it fixed

I tried:
USAGE-FLOW CHART http://forum.xda-developers.com/showthread.php?t=1816560
- Different stock ROMs. Name change to update.zip
But still, the error message "Secure boot: image LNX checksum fail!"
Only a boot with recovery "twrp v2.4.0.0" still succeeds.
This gives a error message "Unable to locate zip file '/ sdcard / SDCARD: update.zip".
E: Error installing zip file '/ sdcard / SDCARD: update.zip ".
Is there anyone who can help me. It doesn't matter anymore what rom I put on as long as it works.
What should I do?
Thanks for any help

I have bricked my ACER and phones several times (and a few times it seemed as if I wasn't gonna be able to restore them). But I always got them running again.
Might take a lot more googling, but you'll eventually figure it out.

OKAstro said:
I have bricked my ACER and phones several times (and a few times it seemed as if I wasn't gonna be able to restore them). But I always got them running again.
Might take a lot more googling, but you'll eventually figure it out.
Click to expand...
Click to collapse
Yessss, I did it . The problem consisted of two problems.
1) APX driver reinstalled.
2) Installation on a Windows 7 PC. (Windows 8 will not work)
Then start all over with "blackthund3r_A500_APX_Flash_Tool_v0.4" software.
What a great tool.
Special Thanks to blackthund3r

Albert50 said:
Yessss, I did it . The problem consisted of two problems.
1) APX driver reinstalled.
2) Installation on a Windows 7 PC. (Windows 8 will not work)
Then start all over with "blackthund3r_A500_APX_Flash_Tool_v0.4" software.
What a great tool.
Special Thanks to blackthund3r
Click to expand...
Click to collapse
CONGRATS!!!

[Q] Who can help provide a motorola official update.zip file?

My milestone 2 is completed bricked and can't be recognized by PC. But I can log in the official recovery screen. I have downloaded a update.zip file from a link （not sure if it is an official link, as I can't find it through Motorola website). It prompted "signature error" when installed. Not sure anyone can provide an update.zip file, so that I can try if I can save my Milestone2. Thanks in advance!

as long as you can enter the stock recovery. your device isn't bricked. did you try to do a full wipe in stock recovery? did you try to use another usb port in bootloader mode? sometimes you get a black screen in bootloader mode, but you pc recognizese your device very well. did you install all drivers on your pc?

lulli1 said:
as long as you can enter the stock recovery. your device isn't bricked. did you try to do a full wipe in stock recovery? did you try to use another usb port in bootloader mode? sometimes you get a black screen in bootloader mode, but you pc recognizese your device very well. did you install all drivers on your pc?
Click to expand...
Click to collapse
1. I have tried full wipe, but didn't work. The machine reboot again and again;
2. I have tried another usb port, another PC and even another operating system (win7 and winXP), also didn't work.
3. I am sure I have installed the drivers, as PC can recognize my phone when it is OK before;
As I can only entered the official recovery screen, I think I can try if it worked when I update with an official update file. Anyway, thanks for your suggestions and reply!

hi,guy.i think you should do the curect usb driver for your pc recongnizing first. than choose a ringt bootlaoder offical ROM. curse your phone can login the rockrecovery screen means its ok! isn't?

I think the only way for you to get an update.zip is with another milestone 2 running froyo, that way you can update it via OTA, and before the phone reboots, take the update.zip from the /cache partition.
Sent from the U