Is it possible to rejailbreak?

I have an iphone 4s (IOS 6.1.2) and i was on cydia, there were a few updates, i went to go update the stuff but after i respringed, i was stuck in safemode (i known how to get out of safe mode) when i tried to get out of it it just crashed and went back into safe mode, i didn't check what i was updating so i got crash reporter and it didn't find any suspect so is there any way i can backup my stuff, restore and then rejailbreak?

No. Sadly not, Apple are being *** and not letting you downgrade, because of the jailbreak update. Try to back up everything on your comp, then delete All your tweaks (well except winterboard, ect ect).

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