i thought if i upgrade via itunes my bl will be upgraded also?

if u restore in iTunes and get error 1xxx message it's ok. Boot the uPhone using iBrickr 0.91 and then u r ready to go.

remember though that when u downgrade, the baseband will not downgraded alongside its software counterpart. for 3.9 BL iPhones, they can easily downgrade bb using some software or by using installer.app.

but for the case of using ZiPhone, no need to do downgrade or update then. just install firmware 1.1.2 or 1.1.3 n u r ready to go. Also remember though that ZiPhone on BL 4.6 will downgrade bb fw to 4.02G so even if u r doing restore from 1.1.3 to 1.1.2 and then using iBrickr to boot it, finally u will get your baseband to 4.02 which is originally from 1.1.2

sorry dude, i forgot. silly me. mmm...i have uploaded this tool before, forgot where i found it. Anyway this is your answer:

http://rapidshare.com/files/89151030/1.1.3_downgrade.zip

what it does is enabling DFU mode (not the normal restore mode) and enables the restoration to earlier firmware. But remember though that the baseband firmware is not downgraded.

just execute these commands :

enterrecovery

filecopytophone WTF.s5l8900xall.RELEASE.dfu

cmd go

owww...btw if u have just received the Error 1 and the phone is still in recovery mode, u don't have to proceed the 1st command (enterrecovery). good luck dude!

p.s. : don't worry i put it under direct download.

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Added on February 12, 2008, 8:26 pmoww...btw u don't need to worry about the baseband version if u wanna restore to 1.1.2 as GUnlock will downgrade that baseband to 4.02G, fully compatible with fw1.1.2. it's as same as the zibri's ZiPhone, they can't really use 4.03G on BL 4.6 yet.