pygame and 2.6.2 firmware

Hi all,
Just picked up a kobo mini with the intention of hacking it and playing around with python :-)
I have installed the telnet hack successfully and installed python.

Am I correct in thinking that pygame is incompatible with firmware 2.6.2?

I have tried several times to downgrade to 2.5.2 but after installing/rebooting the device always gets stuck in boot-up mode and never becomes operational. I have to restore from a backup image to get back to a working system.

I would like to ask 2 questions...

1/What is the correct procedure to successfully downgrade a kobo mini to 2.5.2 and block it from auto upgrading to 2.6.2?

OR...

2/Is there any way the pygame library can be made to work with 2.6.2?

Thanks very much in advance
Phil