Windows Mobile 6.5.3 Build 28002 custom ROM for ACER F1 S200:
1.Download the rom
2.Open it using winrar or 7zip
3.Extract the files to a new folder
4.Look for a file named “version.txt” and change what it says for “2.eTouch.01_EN” withough the quotes.
6.Follow the onscreen instructions
Bugs so far:
Battery % is 100% always, just tap on it and HTC notification will show the true battery level.