[Acer Iconia A500] a.chursin:
Hi! My native language is Russian, and here can be some errors. Pls report - i will correct them.

Problem: after OTA update you have bricked your A500.

Symptoms for HC: after OTA update Acer A500 booting correctly but freeze on main incomplete screen. In upper left corner you can see "Android System", on center of the screen you can see something like "Shutting down" and your touchscreen is unresponsive. If you connect cable to your PC it will fined new hardware MTP Device but it will never appear on "My Computer". if you switch "rotation lock" on and off and turn tablet to vertical position "Shutting down" box from the center of screen will disappear and you will able to touch clock in right bottom of the screen. You can also tap to settings, back, menu and recent applications buttons, but you can't do anything else. And more one thing. Your battery level is stuck on 15% or other level (on my tab it was 12% of charge) and it not changing. Even if you try to charge or discharge your tablet. And more one ( it's important) your power button is illuminated in red all time.

HOW TO UNBRICK your Acer A500:

[downloading necessary files]:

1. you need to get custom recovery for your a500. Go to [Recovery] RA Revamped for Iconia tread and download latest version. YOU NEED TO USE THIS RECOVERY BECAUSE IT HAS TOUCH USER INTERFACE!!!! it's important

2. pls refer to How to root stock 3.2 and download root-3.2.1-V4.7z

3. Go to some Russian forum ;) and at the and of post you will see EC_flash_CWM.rar you need this file. I can't load it here because i don't have permissions from author.

[actions:]

1. extract files from root-3.2.1-V4.7z to c:\a500unbrick

2. open folder "c:\a500unbrick\Images" here you will see system.img, flexrom.img, and etc. You need to fined recovery.img - rename it to recoveryOLD.img

3. take file recovery-ra-iconia-3.16-gnm.img which you downloaded on first download step. Rename it to recovery.img and place it in folder "c:\a500unbrick\Images" from actions step 2. (we replaced recovery to RA revamped recovery with TOUCH UI)

4. go to folder c:\a500unbrick and fined .pdf file with instractions. Read it carefully and follow it.

__________________if you do all in wright way now you should be able to boot RA revamped recovery!!!!!________________

5. extract files from EC_flash_CWM.rar downloaded on step 3 to c:\a500unbrick\ecRom there will be 3 versions - for Android 3.2 3.2.1 and ICS. I think you need to use 3.2.1 version. Load it to microSD card throw card reader and install microSD to you Iconia A500.

6. Your tablet must be switched OFF. - HOLD "Volume-" button on your a500 and press power button. You will boot into RA Revamped recovery. Now you need to flash test_ec_321.zip

_______FLASHING LASTS 1-2 MINETS____ YOUR TABLET WILL SHUTDOWN BY ITSELF_____

and now congratulations!!!! your Acer a500 is unbricked completely!!! Just power it up! it will boot and you will see your actual battery level and it will start recharging!!!

i'm taking your benefits ONLY for collect information in one tread!

i want to say "THANKS"

drellisdee - for recovery with TOUCH UI

timmyDean - for great tool ;)

sp3dev - who point me to EC Rom

and for "fguy" from 4pda.ru for providing files to android community!!!!

warning!

I try this way for my Acer A500 and it's unbricked. but i'm don't providing any guaranty with this tread!!! BURNING and EXPLOSION can be :)

and real one - EC Rom files is only for Acer A500!!! don't try to flash it if you have A501 model!!!

posting this guide on other forums is not polite.