[GUIDE]A500/501/G100W-Installing ICS V8 UNL-BL & CWM Or back to HC BL(24-6-2012)

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tawhid111

Senior Member
Apr 3, 2011
142
51
TORONTO
ok i only saw download mode when i first flashed it n it does not show anymore .tablet is rooted still i can get into apx mode then i press 1 with nvflash it does not show updating android etc ?:confused:

Nvflash just sits there . i presume tablet sits on sleepmode apx mode ---checked tablet power on --checked what seems to be the prob. :/
 
Last edited:

civato

Inactive Recognized Contributor
Apr 20, 2011
4,296
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I have the same question. I am only at 5 mins with just "Nvflash started", but how long should that be displayed before I should see the "Press any key when your A500 is in bootloader mode". Also, My tablet screen is still black.

I did not receive a USB write error, and I did the sync command to check my SBK before running Nvflash and it showed my CUID correctly.

Could the tablet go into sleep mode while in the APX mode?

Can I just reboot the tablet and start again?

Ok, I have the words "Entering Acer Download Mode" on my tablet. Is that what I am looking for or should there be another entry that says it is actually in download mode?

Always make sure your device shows up on your pc in USB devices with recovery driver, see screenshot number 5 on it.
You can just reboot your tablet when in apx mode but don't do it when in download mode.
If it says entering download mode you are good to go.
 

civato

Inactive Recognized Contributor
Apr 20, 2011
4,296
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ok i only saw download mode when i first flashed it n it does not show anymore .tablet is rooted still i can get into apx mode then i press 1 with nvflash it does not show updating android etc ?:confused:

Nvflash just sits there . i presume tablet sits on sleepmode apx mode ---checked tablet power on --checked what seems to be the prob. :/

Make sure you are in apx mode , see screenshot number 5 on it is where you need to check it on your pc.
I think it is in English on your pc . Configuration option / devices manager , there you need to see in USB devices your tablet in recovery driver.
 

tawhid111

Senior Member
Apr 3, 2011
142
51
TORONTO
Make sure you are in apx mode , see screenshot number 5 on it is where you need to check it on your pc.
I think it is in English on your pc . Configuration option / devices manager , there you need to see in USB devices your tablet in recovery driver.

yes im in recovery double checked . next i ran the nvflash then press 1 entered the sbk.... then in unmounts itself from recovery . and just sits there . i dont get the updating from or downloading from acer thing anymore was that it ? .only got that when i finished flashing the bootloader with cwm.

any more suggestions ? >_< i have root is there anyway i can install cwm manually ?
 

civato

Inactive Recognized Contributor
Apr 20, 2011
4,296
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yes im in recovery double checked . next i ran the nvflash then press 1 entered the sbk.... then in unmounts itself from recovery . and just sits there . i dont get the updating from or downloading from acer thing anymore was that it ? .only got that when i finished flashing the bootloader with cwm.

any more suggestions ? >_< i have root is there anyway i can install cwm manually ?

Did you try Acer recovery installer. It says what boot loader you are on.
Are you sure you are using nvflash correct. Navigate to the extracted folder with cmd.
Not just open the extracted folder and click on the bat file.
Look on tegraowners in themes and apps section of the a50O there is a post apx flash tool for ICS , read that one and download the flash tool and the pre build file with 1.031.00 in it , it will flash kernel , cwm and v2 boot loader ( so its unlocked but not the same as the v3)
Read that thread twice , it makes installing even easier.
 

tawhid111

Senior Member
Apr 3, 2011
142
51
TORONTO
Did you try Acer recovery installer. It says what boot loader you are on.
Are you sure you are using nvflash correct. Navigate to the extracted folder with cmd.
Not just open the extracted folder and click on the bat file.
Look on tegraowners in themes and apps section of the a50O there is a post apx flash tool for ICS , read that one and download the flash tool and the pre build file with 1.031.00 in it , it will flash kernel , cwm and v2 boot loader ( so its unlocked but not the same as the v3)
Read that thread twice , it makes installing even easier.

had flexrom on it . Acer recovery installer says bootloader version 0.0312 ICS
-will try apx flash tool for ICS and post back !
 

civato

Inactive Recognized Contributor
Apr 20, 2011
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had flexrom on it . Acer recovery installer says bootloader version 0.0312 ICS
-will try apx flash tool for ICS and post back !

Try the packages from tegraowners.

I gotta go now, will check on this later. Hope it works out for you.
With the flash tool and apx.packages you flash the v2 boot loader but you can also pick seperat files with the flash tool.
So if you select the unlocked boot bin from the folder of the OP and the recovery you can flash them
You can also find those files in here http://xdaforums.com/showthread.php?t=1619913
 
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psxnitro

Senior Member
Apr 3, 2011
132
6
(╯°□°)╯︵ ┻━┻

Why is it getting so ridiculous complicated to flash new ROMs!

:D:D:D

Now that, that's out of the way, Is this going to be a requirement from now on to flash ICS ROMs?

I have ICS Flexreaper R11 with BL3.01/CWM rev1.4.2, kinda wary of the procedures since I don't really have any old back ups of my tablet...
 

tawhid111

Senior Member
Apr 3, 2011
142
51
TORONTO
Try the packages from tegraowners.

I gotta go now, will check on this later. Hope it works out for you.
With the flash tool and apx.packages you flash the v2 boot loader but you can also pick seperat files with the flash tool.
So if you select the unlocked boot bin from the folder of the OP and the recovery you can flash them
You can also find those files in here http://xdaforums.com/showthread.php?t=1619913

tried no go i keep getting recovery verified failed

and nvflash does not show any bootloader i have no recovery so cant do a factory reset either and update.zip does not work but got root access boots fine
 

thafrogggg

Senior Member
Nov 5, 2007
150
26
Hampton Roads area of Virginina
(╯°□°)╯︵ ┻━┻

Why is it getting so ridiculous complicated to flash new ROMs!

:D:D:D

Now that, that's out of the way, Is this going to be a requirement from now on to flash ICS ROMs?

I have ICS Flexreaper R11 with BL3.01/CWM rev1.4.2, kinda wary of the procedures since I don't really have any old back ups of my tablet...

I think you only have to do this only this time to get on the proper ICS boot loader. I only did it because Civato mentioned he was considering making future ROMs for the ICS bootloaders only.

I was on the HC boot loader, so I took the leap, and I am glad I did; this thing is really smooth now.
 

tawhid111

Senior Member
Apr 3, 2011
142
51
TORONTO
(╯°□°)╯︵ ┻━┻

Why is it getting so ridiculous complicated to flash new ROMs!

:D:D:D

Now that, that's out of the way, Is this going to be a requirement from now on to flash ICS ROMs?

I have ICS Flexreaper R11 with BL3.01/CWM rev1.4.2, kinda wary of the procedures since I don't really have any old back ups of my tablet...

Nothing worked but this :


just fixed that problem been at it for almost 10 hours to find a correct solution

get your correct UID . In my case there some weird problem UID wasnt diplaying it all ... use backup_tool to get UID works greats hands down !

once you have that get EUUs_SBK_Acer_A500_1.016.05_COM_GEN1

dont plug in tab let it search for firmware about 5 min later it will ask you if you want to restore it say yes and input your CPUID (same as UID)

-give it about 5 mins tab will be restored back to stock !

thats it .
 

civato

Inactive Recognized Contributor
Apr 20, 2011
4,296
19,224
(╯°□°)╯︵ ┻━┻

Why is it getting so ridiculous complicated to flash new ROMs!

:D:D:D

Now that, that's out of the way, Is this going to be a requirement from now on to flash ICS ROMs?

I have ICS Flexreaper R11 with BL3.01/CWM rev1.4.2, kinda wary of the procedures since I don't really have any old back ups of my tablet...

Last time I ever answer a question about this as all the answers can be found here in the dev section.

All people that got the OTA are on ICS bootloader and no a bootloader is not the same as boot.img ( kernel).

You only need to do this process ones. Its not complicated , my wife that doesn't know sh!t about this followed the guide yesterday and did it in one time .
Get your cpuid ( correct one) click 1 and that is it. In a few words.
So you know :
Bootloader is not the same as boot.img(kernel)
You only got 2 bootloaders =
3.01= HC booltoaders = If you never updated to Acer OTA ICS release you are still on this bootloader.
If you flashed a custom ICS rom with a patched boot.img (kernel) that it can boot ICS rom , you are still on HC bootloader.
A ICS boot.img (kernel) won't run on a HC bootloader that is why the custom ICS roms got patched ICS boot.img(kernel).
What is the so called patch = a simple command line so it will boot and to prevent SoD (what doesn't work for all users).
That was good to begin with but not anymore,well if you are planning on going back to HC rom don't update your bootloader . All people with stock roms that recieve the ICS OTA are going to ICS bootloader , if they want it or not , so going back to HC rom is not going to happen for them or they need to flash with nvflash a EEU version .
Then you got ICS bootloader = 0.3.11 or the new 0.3.12.
If you flashed one of the stock leaked ICS roms or you got the ICS OTA from Acer you are on ICS booltoader.
(0.009.00 , 0.014.00 , 0.022.00 and the latest 1.031.00 what is the same as the Acer OTA)
ICS bootloader got fastboot and it makes ICS run smoother ,no messed up bootscreen and SoD problems.

One problem you lose your custom recovery by doing that so time to , root and install the patched unlocked V3 - 0.3.12 ICS bootloader with custom recovery.
Ones you have done that you can flash any custom ICS rom that got a normal ICS boot.img (not the patched one).
That is why some custom roms got 2 different boot.img (kernels) , one for HC booltoader users and one for the ICS bootloader users.
So if you see kernel or boot.img that is the same , bootloader is something totaly different.
Tweaked kernels are in some custom roms available for higher benchmarks , then you got a "patched ICS kernel (boot.img)" for HC bootloader users (if not ICS won't boot) and one "kernel(boot.img)" for ICS bootloader users.

Hope that makes some things more clearer and stops the other roms got so many bootloader versions.
There are no bootloader versions on a custom rom , only boot.img(kernels) so it works.

One big and Main advantage with ICS bootloader is that you no longer have to worry about ending up in unrecoverable state, such as when on HC bootloader you corrupt both boot / recovery partitions (such as not running itsmagic etc.) - you can recover with fastboot easily.
b
 
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Thegn

Senior Member
Jul 26, 2007
234
29
*Update*

Weird... But the third time I tried, it worked! :)

----------------------------------------------------------

Thank you Civato for all ROM:s and this guide!

Unfortunately I have some problems with this Bootloader installation.

I have entered APX-mode and checked that my SKB is correct. I flashed the preparation ROM via CWM and after that went into APX-mode again in order to upgrade the bootloader.

My problem is the same as other are having, that the installation just sits still at "Loading bootloader... Nvflash started". At the first try I waited almost 10 minutes, that I made a reset, and the tablet restarted and loaded the ROM correctly.

I did a new try with the bootloader installation, but it still sits still at "Nvflash started", and I have waited 15 minutes... :-(

And, yes, in Windows it showed that the USB recovery driver was loaded before starting the script.

What is wrong?

Cheers,
 
Last edited:

ethan21

Member
Feb 10, 2010
41
2
Yes
And you only need to do this ones and not every time you install a ICS custom rom.
Come one people , read up a little .
Never said you had to. Just making 100% sure. Given all the warnings then even if it is to you a soft question then to take me from 99.99% certain to 100% is prudent.
Thanks for the guide and hard work.
 

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    First thanks to Skrilax_CZ (unlocked bootloader) , jm77 (for his guide), strra(tools and bat file) Zatta for modded script , blackthund3r for APX flashing tool & gersma (for otatool)

    You need to understand that this can brick your tablet and going back to HC roms is not possible or you need to reflash your tablet again with this
    WHAT IS THIS V8UNLOCKED multi ICS BOOTLOADER

    You can install the ICS bootloader using cwm if you are on V4 or V5 , see in this link for the updates and cwm packages.

    PLEASE FOLLOW TO THE LETTER AND READ TWICE , don't be drunk , don't watch sports (we are men and can only do one thing at a time), don't take advice from your wife , girlfriend or whatever you need to feel loved , this is not like shopping for a bike or car!!! This is probably the most boring thing you are going to do in your life!
    Option 1 use Afterota for A500/G100W IF YOU ARE ON OTA ICS and follow this thread
    Option 2 , keep reading.... don't be a chicken , just do it !!.​

    -STEP 1=Install the USB drivers from Acer on PC ( Acer's). NOTE: If you got stuck or can't get into APX mode please make sure you reinstall the usb drivers first and you got the latest ones.
    STEP2=First before you do anything else make sure you got your "cpuid". How see Q&A , bottom of this thread.
    Or you use the Blackthun3er V0.4 APX flasher (see in the section "automated flashing tool") , this tool will give and fill in your SBK automaticly if you used it before.

    -STEP 3=Now go
    to get your SBK or use this tool you find here
    -STEP 4=Make sure you got a ICS rom on your tablet to flash after you installed the ICS bootloader the first time .
    -FLEXREAPER

    -LIGHTSPEED


    -TABOONAY
    (with this make sure you flash the Kernel for ICS bootloader after you installed the rom , you find it in the Taboonay thread)

    -ezterry ICS 1.031.00stock- full root with busybox, and more tweaks


    -
    A501 Alexandra IV ICS ver 4.0.3. (for A501 users)

    -FULL-STOCK-FULL-ROOT


    -Or you can flash the full leaked version of 1.031.00 405MB but then you need to get root so you can delete "recovery-from-boot.p" from /system before you flash the unlocked booloader and custom recovery.
    Good time to check your SBK number , see Q&A section
    STEP 5= Going into APX mode see Q&A or use A500 manager
    STEP 6 INSTALLING ICS BOOTLOADER
    Automated flashing tool

    USING blackthund3r ATX flash tool , It makes it all a little easier !

    You need help on this ! Here is a walk thru!

    -download the APX-FLASH-Tool & Manager

    -Download one of the V8 unlocked bootloader apx flash packages combined with a recovery of your choise
    .

    V8-pubA50._public_recovery.a500apx
    V8-Thor_1.7.3_recovery.a500apx
    V8-TWRP_2.1.3_ICS_recovery.a500apx
    - Firts you do the Steps 1-2-3- 4 of the main guide !!

    -1-Reboot your tablet and make sure on your tablet: "Settings" -> "Applications" -> "Development" -> "USB debugging" switch on.

    -2-Now start the "A500APXFlash.exe" , the tool will start .

    -3-When it askes for your SBK you need to type it in , the v0.4 APX flash tool will give your SBK automaticly !!

    -4-Now you select "Use an A500 APX Flash Tool Package.(.a500apx)

    -5-Select the package that you want,(you click on the right arrow to continue)

    -6-Now you can select "Manual Method" or "Automatic Method". (I always pick Automatic)

    -7-Click on "Enter APX Mode" (now it will do his thing)

    -8-When it says "Done! press to run again" (even if it says on the bottom of the app "no apx mode devices are connected") you click on the right arrow to continue.

    -It will ask if you are ready (click yes if you are)

    -Let the app do his thing and wait !!!!!!
    Until it says "Done! Press and hold power to switch off then power back on!"

    [FONT=&quot]Optional A500MANAGER
    What does it do : [/FONT]

    · [FONT=&quot]One-click APX Mode entry[/FONT]
    · [FONT=&quot]One-click Recovery Mode entry[/FONT]
    · [FONT=&quot]One-click fastboot entry for patched bootloaders[/FONT]
    · [FONT=&quot]Instant logcat viewer[/FONT]
    · [FONT=&quot]Instant dmesg Viewer[/FONT]
    · [FONT=&quot]Function which dumps the dmesg to a text file on the desktop[/FONT]
    · [FONT=&quot]Serial number extraction to make SBK calculation exponentially easier[/FONT]
    · [FONT=&quot]Links to ICS Root, A500 APX Flash Tool and two download links (Acer and my mirror) for USB Drivers[/FONT]
    · [FONT=&quot]Shows what mode the tablet is in at the bottom[/FONT]

    BIG THANKS TO blackthund3r

    Manual flashing

    Open cmd (command prompt) on the extracted folder "V8-UNL-ICS-HC-bootloader-MULTI-cwm".
    (Tip how to open cmd on any folder you want
    Windows Vista/7 : Simply hold down the Shift key and right-click a folder. The context menu will contain an entry, ‘Open command window here.” )
    Or you if you extracted the folder in c:\nvflash you type in cmd "cd c:\nvflash"

    -FOR A500/A501/G100W:

    For the ICS bootloader and multi custom recovery's you type in cmd : v8 (enter) (or you open the folder and click on this "v8.bat")
    Now you get 4 choises of V8 with a different recovery , select one.

    -TWRP recovery
    -PubA500 recovery
    -Thor1.7
    -Thor1.7.3

    If for any reason you want to go back to HC bootloader:
    For the HC bootloader and recovery you type in cmd : a500-hc (enter) if you have a A500 or a G100W (or open the folder and click on this "a500-hc.bat")
    For the HC bootloader and recovery you type in cmd : a501-hc (enter) if you have a A501 (or open the folder and click on this "a501-hc.bat")


    -Your SBK is asked : you put that in and press enter. (right click on cmd titlebar gives option to copy/paste it)


    -The process should begin. If you recieve a USB write error, your SBK is incorrect. (Lot of stuff going on in the cmd and then it stops)

    -Windows command prompt will read "Press any key when your A500/501/G100W is in APX mode". Do not continue until the tablet is in "Acer Iconia A500/501 APX Mode" (look at the screen of your tablet).

    -Once the tablet reads "Acer Iconia A500/501 APX Mode", you are in bootloader mode. You can proceed and it will begin formatting the various partitions and installing the recovery.

    -Once the process completes, it should say PASS (on the screen of your tablet) in big letters and in small red letters "Reboot the device" (Top left corner still says "Acer Iconia A500/501 APX Mode" that is normal) . You can then power off the tablet and power it back on again.

    If you get the message = secure boot : image LNX checksum fail ! , No problem just reboot the tablet.

    -Make sure your tablet boots.
    Power the tablet down and attempt to launch CWM via Power+VolDown.
    You Are on the ICS Unlocked bootloader and want to install a different CWM the easy way !
    Put it on your tablet and install with CWM

    -Ezterry's BareBones Recovery :CWM-install-A500PubRecovery_v0.2.zip

    -TWRP 2.1.3-ICS (touch recovery) :CWM-install-TWRP-2.1.3-ICS.zip
    (modded by civato for ICS only , no more messed up screen on booting into recovery)

    -Thor 1.7 touch recovery (repacked to work on ICS) :CWM-install-recovery_thor1.7.zip

    -Thor 1.7.2 Multi bootloader (HC , ICS) touch recovery :CWM-install-recovery_thor1.7.2.zip
    (But for some this doesn't work)

    Q&A:
    How to get my CPUID ?

    On HC Rom or HC bootloader (3.01) or you got a old nandroid backup do this to get your cpuid
    -You can find your "cpuid" in one of your "nandroidbackups" that you made with cwm (look on your external SD/clockworkmod/backup=uid.txt ). It's the uid text you are looking for.
    -Or when you connect your tablet and type in adb devices in cmd you get your cpuid
    -Or usbdeview see more info here , thanks to dibb_nz


    ON ICS ROM or ICS booloader (0.3.11 or 0.3.12) do this to get your cpuid:
    Or you Install and launch Android terminal app on tablet. Run the following command: dmesg>/mnt/external_sd/dmesg.txt
    Open up dmesg.txt (will be stored on your external SD) and look for androidboot.serialno. That is your CPUID.

    Or try the following to get your cpuid (thanks to japinder)
    -Reboot the Tab & just use the command 'dmesg | grep androidboot.serialno' (without quotes).
    It displays the cpuid there & then. No extra lines, no need to save to file & then search. If the Tab hasn't been rebooted in a while, then the line containing 'androidboot.serialno' entry is lost/overwritten, so it won't even be there in the 'dmesg' output. Running the above command after a fresh reboot will always yield the result in an easier way.

    OR SEE GUIDE HERE , WHERE IS MY CPUID AT



    Checking your SBK

    Go into APK mode (step 5 or use A500 manager) and open cmd on SBK-test (download this first) folder and type in something like this:
    nvflash --bl bootloader.img --sbk (your SBK) --sync]

    In my case = nvflash --bl bootloader.img --sbk 0x3DA61E00 0x7899AA01 0x97D04E03 0x1E092103 --sync (enter)

    If your SBK is good you get your system information and you will see your chip uid with some more stuff.

    If your SBK is wrong, you'll get this:
    rcm version 0X4
    Command send failed (usb write failed)

    STOP HERE AND DON'T PROCEED if your SBK is not correct!!!!!!!!!

    (Tip how to open cmd on any folder you want
    Windows Vista/7 : Simply hold down the Shift key and right-click a folder. The context menu will contain an entry, ‘Open command window here.” )


    Going into APX MODE manualy

    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.


    Linux users see here
    10
    If you provide me the write up I will add it , I know nothing of linux so it is up to you.
    Finally had some time to write up on the Linux guide. It's not so much of a guide, but more pointers to the correct working linux nvflash binary and some common sense.

    1. There is no need for special APX drivers! Everything works like it is.
    2. These additions to /etc/udev/rules.d/51-android.rules might help:
    Code:
    SUBSYSTEM=="usb", ATTR{idVendor}=="0502",ATTR{idProduct}=="3325",  MODE="0666", SYMLINK+="a500"
    SUBSYSTEM=="usb", ATTR{idVendor}=="0955",ATTR{idProduct}=="7820",  MODE="0666"
    You need to restart udev if you added this.
    3. The working nvflash tool can be downloaded from nvidia via this link:
    http://developer.download.nvidia.com/assets/mobile/files/tegra-linux-12.alpha.1.0.tar.gz
    4. If for whatever reason the above link becomes outdated, the official Linux 4 Tegra page, pointing to the latest Linux 4 Tegra tools is here:
    http://developer.nvidia.com/tegra-250-tango-development-kits
    5. Drop the nvflash binary beside the windows nvflash.exe (they won't bite) and create your own a500.sh file something like this (inspect the original a500.bat for the actual bin and image file names) depending on your needs and wishes:
    Code:
    #!/bin/sh
    ./nvflash --bct bct.bct --setbct --bl bootloader.bin --configfile flash.cfg --odmdata 0x300d8011 --sbk 0xXXXXX 0xXXXXX 0xXXXXX 0xXXXXXX --sync
    ./nvflash -r --format_partition 4
    ./nvflash -r --download 4 ics_boot_unlk_V3.bin
    ./nvflash -r --format_partition 6
    ./nvflash -r --download 6 recovery_thor17_403.img
    ./nvflash -r --go

    In APX mode, the screen is black but you should see a new usb device with the following id's with lsusb:
    Code:
    $ lsusb
    ...
    Bus 002 Device 005: ID 0955:7820 NVidia Corp.

    Hope this helps.
    4
    Remember this line of the guide
    You can also flash the full leaked version of 1.031.00 but then you need to get root so you can delete "recovery-from-boot.p" from /system before you flash the unlocked booloader and custom recovery.

    If you flashed the full leak version you need to delete
    "recovery-from-boot.p" from /system if you don't do that recovery will be replaced everytime you reboot your tablet.
    4
    Will the cpuid ever change? I only found it on a really old Nandroid. It was blank in a more current one

    Sent from my A500 using XDA
    Always test your SBK to be sure , see guide.
    4
    Was what I was thinking , I used the uid from my first nandroid backup when it was still a PackardBell HC 3.0.1 rom from the G100W.
    But still want them to test there SBK before they complain it got stuck.