This is only for the FIDO ROM!
As you may all know, the official Froyo ROMs for Rogers and Fido have been released on Acer Canada's website. However, you won't be able to upgrade if you are not currently running the stock ROM from Rogers / Fido. This is because the developers at Acer put in assert checks to make sure you are upgrading from a stock Rogers / Fido ROM.
I'm sure a lot of you here are in the same boat as me and running a custom Froyo leak, which won't be able to upgrade directly using the official Acer Froyo ROM. But worry no more, I was able to modify some of the scripts and work around the assert checks.
Info
Enough of the rambling, here's the information for this ROM:
Baseband version: A1-05.01.05
Kernel version: 2.6.29
Build number: Acer_LiquidE_4.004.04_PA_FIDO
Download link:
http://www.megaupload.com/?d=03DEQV74
Instructions
To upgrade, simply download the file from the link above and copy it to the root of your SD card. Then, enter recovery mode (volume down + camera + power button). I flashed this using Malez Recovery, but it should also work if you have the original recovery. It should flash directly (without the need to bypass signing checks), as I've re-signed the file after modifying it.
Notes
One thing you may notice though is that the preset Fido 3G internet APNs don't work... this is simple to fix, just create a new APN with the following settings:
Internet
Name: Fido Internet
APN: internet.fido.ca
Username: fido
Password: fido
APN Type: default
Leave all other settings blank
MMS
Name: Fido MMS
APN: mms.fido.ca
MMSC:
http://mms.fido.ca
MMS Proxy: 205.151.011.013
APN Type: mms
Leave all other settings blank
Happy upgrading!