[Android General] nikagl:
Flash Full ROM guide (for unbricking) for A1-81x (A1-810 and A1-811)

Hi all,

Before you PM me about links:

Sorry, I deleted all Acer stuff. I'm afraid you're gonna have to search the internet for it if a link fails...

As the above guide might not be detailed enough, here's a new guide for flashing the A1-81x (A1-810 and A1-811) firmware with SPFT (based on the flash recovery and SUPERSU for ROOT guide for A1-811):

Download and unpack drivers: http://bit.ly/1hujx8o

Run "install_driver.exe" AS ADMINISTRATOR and wait about 2 minutes. After this you will see a popup window (Driver for xxx installed), close it and reboot your PC.

Turn your tablet off and connect it to PC. You will see a popup message "New device detected". Wait until drivers will be installed OR until tab will disconnect from PC.

Download the firmware for your device. Unpack the "firmware" archive to your folder.

A1-810: http://bit.ly/1gn7mtj

A1-811: http://bit.ly/1OGJDAe

Download the SP Flash Tool for your A1-81x: http://bit.ly/1FBNrgP. Unpack the "SPFT" archive to your folder.

Launch "/SP Flash Tool/flash_tool.exe" AS ADMINISTRATOR.

Press "File"->"Open Scatter-loading file...", choose MT6589_Android_scatter_emmc.txt from the "firmware" folder

Press "Window"->"Write Memory", new tab will appear, open it.

Click "Open Raw Data", choose "secuoff.img" from the "firmware" folder.

Configure options:

Memory Setting = EMMC

Begin Address = 0x3D80000

Container Length = 0x006D20

Click "Write Memory" and connect your tab to PC.

Red progress bar will appear.

Gray-green progress will appear.

Green circle will appear and you will hear the "device disconnected" sound.

Disconnect tab, DO NOT turn it on!

After this return to the "Download" tab.

Leave the default selection (you can try uncheck USRDATA if you want to try to preserve your data, if it bootloops, make sure it's checked - if checked it will wipe data like Factory Defaults).

Press "Download" and connect your tab to PC. Flashing process will start about in 20 seconds.

You will see following progress bars:

Red progress bar.

Purple progress bar.

Yellow progress bar.

Green circle.

Disconnect tab,

[*]Reboot tab and check whether flashing the ROM was succesfull

[*]If needed, you can try to flash SUPERSU with the following procedure:

http://xdaforums.com/showpost.php?p=60137778&postcount=529

TROUBLESHOOTING AND SPFT ERRORS:

SPFT Error "??(2)": Reboot your PC and retry.

SPFT Error #10*3: Reinstall driver, try another USB port.

SPFT Error #1021 (#8045): Your tab is completely dead. Nothing can revive it.

SPFT Error #2004: The most dangerous and common error. See "Fixing reconnecting" below.

SPFT Error #3144: This error may be on B1 tablets. For fixing it you need to remove back cover.

When red bar will reach 100%, wait about 1 second and disconnect the battery.

But if it will not help, you need to use testpoint.

SPFT Error #4001: Disconnect tab's battery and retry without it.

SPFT Error #4010 (#4032): The problem is on PC side. Try to reinstall driver, use another

USB port and cable. The most users who got this problem has solved

it by using another PC. Try to Disable signature enforcement if you're on Windows 8 / 8.1

SPFT Error #61**: You will get this error when you have unlocked your bootloader and trying to flash.

Solution: in SPFT UNcheck all blocks except PRELOADER, flash it using "Download" button.

Then flash ALL blocks EXCEPT PRELOADER using "Download" button.

SPFT Error #8038: Flash using "Download" button.

Fixing reconnecting:

When you connect your tab to PC, it recognizes tab. But after few seconds tab starts to reconnect every 3-5 seconds. Only two solutions are available at the moment:

1. Disconnect tab from PC, press Reset button (located in the small hole) THREE TIMES and try to flash again.

2. Try to flash without battery. Stuck on "Searching..." in SPFT:

See SPFT Error #4032.

Stuck on Acer logo: Press "Reset" and turn tab on again.

Regards,

Nika.

Flash recovery and SUPERSU for ROOT for A1-81x

Flash Full ROM guide (for unbricking) for A1-81x