[LowSuperasder]

Hey guys,
I have found an interesting way to downgrade a PRS-T1 (I'm on 1.06 now) - it's not complete yet, but if someone with more experience could look into it, this may become a proper may to downgrade.
what I did was:
1. Downloaded an official updater (PRS-T1_Updater_1.0.05.11130)
2. Used 7-zip to extract its contents
3. In PRS-T1_Updater_1.0.05.11130.exe\eBookUpdater\scripts\u pdater.xml I found this line:

"return updateVersion <= deviceVersion"

and changed it to

"return updateVersion >= deviceVersion"

hoping this would let the updater push an older version to the device. When I fired up the FY11-Reader Updater.exe located at the root of the updater, after accepting the license agreement, it let me start the update process, even though it saw that my current version is newer.
The process has started, and then it stopped, telling me that the updating has failed. I looked closely at the steps it makes towards that error, and the step that caused the failure was another versioncheck - but I couldn't locate the command for that one. If someone could find that line, we could finally install the 1.05 version (or any other) on our PRS-T1's, no matter what.

(Another tip: I found a line that checks for languages, so if you want to use one language anyway, just delete the other ones located in eBookUpdater\scripts\languages, and it won't ask you to choose one when starting the updater.)

I hope this may help someone, and sorry for my technical roughness - this is my first time to post in a forum like this.