hi sifus,
i believe that all of u guys know error 6 well when we try to restore through itune.

well im doing my upgrade and im facing this problem too.

some said root size problem...ok...i tried....from 500MB to 550MB to 600MB until 800MB...still same

some said DFU problem.

ok here's the real problem. i've been trying to put my iphone to DFU mode...but each time it will direct to Recovery mode....tried more than 100 times ( yes...more than 100 times)

everytime i restore it through itune( recovery mode) it prompt error 6.

maybe my iphone is special...but i dont know...

but 1 thing for sure im feel really helpless now. as i have tried every solution online.

just to make myself clear...

1st) i did google the info...

2nd) i tried all possible solution

3rd) i search through all forum, include here.....

4th) i tried endless time....still the same....

so dont flame me if i open a thread seeking for help....i'have tried my best....  

now 5am still cant sleep....tried two days already to put my iphone to DFU mode