iphone 4.1 network keeps going

[daz24c]

hi does any1 else have any problems with firmware 4.1?
im on o2 with a 3gs new bootrom tried jailbreak and not jailbreak and it has same problems.my network keeps coming up as searching and then takes ages to get a connection back.ive tried finding a website to get an old ipsw from but i can only find firmware in loads of folders and not 1 ipsw.does any1 know anywhere i can get 1 from?
thanks

[smirnoff_rules]

u can restore in itunes l think ? have u tried

[daz24c]

yeh mate restored as standard still the same restored and jailbreaked still the same even restored from an older backup

[smirnoff_rules]

have u tried a network reset in settings

[daz24c]

yeh just the same im gettin annoyed

[daz24c]

Ive turned off 3g in the settings and it stays connected all the time.maybe its the sim card?

[smirnoff_rules]

have u unlocked the phone ? if u have u have to turn 3g off till after its gone

[daz24c]

nah its a contract 1 mate

[daz24c]

network problem after all that.when i spoke to the woman earlier it wasnt but after i explained the 3g bit it was a network problem