Upgrade Firmware while keeping baseband 01.10.04

[candn14]

I am running a AT&T Iphone 4 on 04.10.01 (sorry put it wrong way around in title) which i have been using a gevey sim to have it unlocked.

Just want to confirm that i can with Red Snow keep/preserve the baseband while still upgrading to latest 5 update?

If so can you show me the way to a video or instructions

Thanks

 

[Kyotoma]

I've never even seen that baseband. o.o

That's lower than the initial release baseband on iOS 4.0. You must have a real gem on your hands!

 

[Applejuiced]

That's not a correct baseband version but either way yes, you can create a custom ipsw using redsnow that leaves your baseband untouched.
And still maintain your unlock with gevey.

 

[candn14]

Sorry meant to be - 04.10.01