(adsbygoogle = window.adsbygoogle || []).push({}); So... i'm kinda new... so i was wondering

i got 2 ps3:

-Cech 2001a(does not read disc)
-Cech 2501a(normal one)

for the one does not read disc:

-well can i downgrade it with Progskeet?
-Can i RTM with out any non normal program or i just use the normal one's

Normal One:
-Can i Downgrade it? ( if i can't, the question under this one is not valid )
-Can i Downgrade it with Progskeet

Edit: And What ProgSkeet can i use for them ps3, i'm kinda new but my friend can do the soldering and stuff

......

Moved to the PS3 Mods Questions and Inquiries section.