Possible to do this? (downgrade)

[gregrose]

Hey all, have ip4 on 4.2.1

If I downloaded 4.1 torrent, is there a way to go back & restore my phone (or install) 4.1 back on my phone? Or no way possible to do that at all without screwing up my phone?
If possible, how would i do it?
Thanks

 

[h1r0ll3r]

If you have the 4.1 SHSH, yes.
If you don't, no