Hi guys,

phone: 3g
FW: 4.1
BB: 05.13.04

When I was on 4.0 I used redsn0w 0.9.5b5-5 & Ultrasn0w to jailbreak and unlock. It was quiet stable. When 4.1 came out I then used Pwnage 4.1 & Ultrasn0w to jailbreak and unlock. The iPhone now keeps 'crashing' - flicking back to the pineapple boot screen and taking up to 10 minutes to waiting and doing resets for it to finally get back to the password screen.

It is doing this too often for my liking, so I was wondering if it is possible to Shift+Restore to the official 4.0 ipsw and re jailbreak/unlock with redsn0w 0.9.5b5-5 & Ultrasn0w or even try redsn0w 0.9.6b2 & Ultrasn0w?

I am just concerned over the "ULTRASN0W UNLOCKERS BEWARE!!" statement with in this blog post.

Thanks for any advice you can give me.