Acer tablet owners across the country were elated (well, most of them were, anyway) when Acer announced that Ice Cream Sandwich will be coming to the A100 and A500 in April. Thanks to a new leak that made its way to XDA, though, the wait for April just got a lot shorter. Ice Cream Sandwich ROMs for both devices landed in their respective forum on XDA earlier today, bringing a taste of Android 4.0 to the duo.

While early reports have been pretty positive, it appears that these aren't quite final builds just yet. Most noticeably, the "Acer Ring," which is supposed to appear in the official OTA builds, is absent from these leaks. Still, they both appear to provide a fluid stock experience, so if you've been aching to see what ICS is all about on your A500 or A100, hit the links below to download.

Flashing this ROM on the A100 will break root with no way of getting it back at this point.

ICS for the Acer A100 | ICS for the Acer A500

Installation Instructions


  • Download the file from the source link
  • Rename it to 'update.zip' (no quotes) and place it on your external SD card
  • Shut the device down and reboot into recovery by holding Volume Up while pressing Power
  • The update should start automatically


Requires RA Recovery if you want to keep root.

I highly recommend reading through the thread at XDA before attempting to flash this.
  • Download the RA version of the file and place it on the SD card
  • Reboot into recovery
  • Wipe data/Factory reset
  • Wipe Dalvik
  • Install the zip

If you're not rooted, download the "original version" from the source link and follow the above instructions for the A100.

As always, if you have any questions, hit up the appropriate thread on XDA.

Good luck!

Thanks, Matthew!

Cameron Summerson
Cameron is a self-made geek, Android enthusiast, horror movie fanatic, musician, and cyclist. When he's not pounding keys here at AP, you can find him spending time with his wife and kids, plucking away on the 6-string, spinning on the streets, or watching The Texas Chainsaw Massacre on repeat.

  • http://www.reviewedbyandy.com Andy

    Awesome. Really tempted to try it out but I don't want to have a 250 dollar brick if something goes wrong

  • xsirxx

    hmm Can we maintain root if we do it?

  • xsirxx

    that was a question for the A500...

    • xsirxx

      NM RA Recovery will let us keep it...Reading is good...

  • Matt P

    Um...boot to recovery is volume DOWN and power, not volume up. Just wanted to point that out to anyone who may never have done it before. Also, this worked for me. Only problem I had was getting the download to complete. Had to use the mirror on the Russian site.

  • infx

    volume up in portrait position...

  • michelle

    What is the "Acer ring"? I need to know before I do this. Kinda new to the lingo. Buy if it makes it run perfectly I will wait till April.

  • michelle

    I've tried this 8 times. Not working!!! Idk what's wrong.

  • Bob

    Something new :
    Ainol Novo 7 Aurora Ultra-thin Android 4.0 Tablet PC 7 inch IPS HD Screen 1GB RAM Camera HDMI White 8GB $249.99, On Sale Now: $169.99 from uPlay Tablet.

    Link --> http://www.uplaytablet.com/ainol-novo-7-aurora-ultra-thin-android-4-0-tablet-pc-7-inch-ips-hd-screen-1gb-ram-camera-hdmi-white-8gb/

  • roki

    Ainol Novo 7 ELF – 7 inch HD (1024*600) Android 4.0 Tablet PC with 1GB DDR3 RAM ARM A10 Many CORE 2160P 2MP Front Camera HDMI 8GB: $219, On Sale Now: $149.99 from uPlay Tablet

    link --> http://www.uplaytablet.com/ainol-novo-7-elf-7-inch-hd-1024600-android-4-0-tablet-pc-with-1gb-ddr3-ram-arm-a10-many-core-2160p-2mp-front-camera-hdmi-8gb/