This guide isn't really my own I've just taken the information from here, here and here and aggregated it.
How to install a Custom ROM
1.) Download Gingerbread: http://vache-android....php?fileID=124
2.) Extract the "acer_ug" folder from the zip file on your SDCard
(optional) : Reboot in recovery and wipe all/factory reset
3.) Power off your phone
4.) Boot to SD Download Mode with Camera / Vol- / Power (the phone will vibrate 3 times)
5.) Wait until it has finished, the phone will reboot
6.) Activate USB debugging on your phone.(How to)
7.) Plug your phone to your computer with your USB cable
8.) Download Recovery 3.0: http://vache-android....php?fileID=125
9.) Unzip the "RecoveryMT-3.0" folder from the zip file
10.) Launch "install_recovery.cmd"
11.) Download your custom ROM e.g. http://android.modac...y-301-05112011/ and copy and paste either files onto the SDCard
12.) Boot into recovery mode using Volume Up + Focus + Power
13.) Select 'Wipe Data/Factory Reset' (don't wipe the SD Card).
14.) Go back and select 'Install .zip from SDCard' and browse to the ROM file, confirm.
Important Note: SD Download Mode (Step 4) checks if the language in the BIN files are consistent, this may mean you need to use the Acer Download Tool from here to flash BIN files of a different language. It's probably a good idea to try this utility if you get error messages at step 4.
Flash the BIN file in /acer_ug/acer_xx/whateverfile.bin using the download tool, select the BIN File in the Merged OS File section. See screenshot attached.
Thanks to Vache for instructions 1 to 10 & Thanks to lgcmn for the basic structure of the guide from this thread: http://android.modac...final-tl-metal/ & Thanks to Vikings123 for notifying me of the limitations of SD Download mode. Also, Thanks flibblesan for pinning this. Thanks for Chrishund for letting me borrow the instructions on how to root.
Sorry if there are any mistakes or anything else to be aware of, if so please let me know and I'll amend them.
Partitioning your SD Card for A2SD/Link2SD etc.
For the guide I'll be using the Partition feature from AmonRa Recovery available here. You can use apps like Gparted etc. as well as ClockworkMod Recovery if you prefer.
Before beginning you need to have rebooted into Recovery Mode. To this with the respective key combo's above or use 'ADB Reboot Recovery' when your phone is plugged into a computer with USB Debugging enabled.
1.) Mount your phone as USB or go into Recovery and select USB MS Toggle and plug the phone into a PC.
2.) IMPORTANT: Backup/Copy the entire contents of your SD Card onto your PC.
3.) Unmount/Disable USB MS and either reboot or go back to recovery.
4.) Select Partition SD.
5.) For the sizes select 0 for Swap. Make the EXT size at least 512MB for A2SD and the rest should be FAT32.
6.) Confirm. All your data on the SD Card will be lost.
7.) Let it complete.
8.) Re-enable USB MS toggle and copy the contents of your SD Card back onto the phone.
9.) Now, you can either do a full wipe and start with a fresh ROM or reboot and try setup Link2SD etc. (Personally, I'd just do a full wipe and start fresh but it's up to you). If you have problems e.g. force closes etc. then do a full wipe.
How to Root Non-Rooted ROM's
1.) Follow steps 6-10 of 'How to install a custom ROM above. Note: If your PC doesn't recognize the phone then you may need to install Acer Sync.
2.) Download this and copy it onto your SDCard.
3.) Now turn off the phone and boot into recovery mode Volume Up + Focus + Power (For ClockworkMod).
Down + Focus (Press Camera button Gently) + Power for AmonRA.
4. Choose 'install .zip from SD Card' and find the Superuser.zip install and reboot.
Edited by k0zmic, 02 January 2012 - 12:31 AM.