Downgrade iPad?s 06.15 baseband on the iPhone3G or iPhone3GS.

[fijiman]

This is a bit from the devs page :

"Typically you?d have the 06.15 baseband if you unlock with ultrasn0w but updated your iPhone baseband past 05.13.04. With this new capability, you can now downgrade specifically from 06.15 to 05.13.04 (even if you never had 05.13.04 on that device before). This gives you the best of both worlds: ultrasn0w compatibility and a normal iPhone baseband with full GPS and the ability to use stock IPSWs again."

Was never a fan of the iPad baseband fix....

[billy2]

m8 is there any guide on ther forum for this ????

cheers

[s0lid]

m8 is there any guide on ther forum for this ????

cheers

searching the whole paragraph shows the instruction and download site

[fijiman]

m8 is there any guide on ther forum for this ????

cheers

Woops...forgot the link....Dev-Team Blog

[fijiman]

[ame=http://www.youtube.com/watch?v=QlZNdZLekuU]How To Downgrade iPhone 3G / 3GS Baseband 06.15 To 05.13 - YouTube[/ame]

[billy2]

thanks m8 been looking at this video where his taking about new & old boot rom he saying that dig number (3) is a 9 it is old boot rom and dig (4-5) anything under (40) is old boot rom ????? on my phone dig mumber (3) is a 1 and (4&5) is 11 so that makes it old rom is this right ???? when i run it true redsnow it tells me it a new rom ???? [iBOOT-359.3.2]-NEWBOOTROM so iam lost now

(2) IN THE VIDEO he gives links to the bits needed to do this downgrade

(1) redsn0w_win_0.9.14b1 (done)
(2) link to firmware (must be firmware your run now ) ok on my 3gs its running 6.15.00 and is not in the firmware link, so what would i need to do here ???


cheers

[fijiman]

To qualify for OLD BOOTROM the 3rd digit must be a 9 and digits 4&5 must be less than 40.... looking at your numbers your 3GS is on the NEW BOOTROM.....

Your mixing up firmware with Baseband (06.15.00)....you need to look for the firmware on your 3GS... Settings>General>About>Version....Goodluck:

[ferarrifeet]

thanks m8 been looking at this video where his taking about new & old boot rom he saying that dig number (3) is a 9 it is old boot rom and dig (4-5) anything under (40) is old boot rom ????? on my phone dig mumber (3) is a 1 and (4&5) is 11 so that makes it old rom is this right ???? when i run it true redsnow it tells me it a new rom ???? [iBOOT-359.3.2]-NEWBOOTROM so iam lost now

(2) IN THE VIDEO he gives links to the bits needed to do this downgrade

(1) redsn0w_win_0.9.14b1 (done)
(2) link to firmware (must be firmware your run now ) ok on my 3gs its running 6.15.00 and is not in the firmware link, so what would i need to do here ???


cheers

hi, 6.15.00 is baseband not firmware your firmware will be something like 5.1.1 check on your iphone.

[billy2]

To qualify for OLD BOOTROM the 3rd digit must be a 9 and digits 4&5 must be less than 40.... looking at your numbers your 3GS is on the NEW BOOTROM.....

Your mixing up firmware with Baseband (06.15.00)....you need to look for the firmware on your 3GS... Settings>General>About>Version....Goodluck:

thanks very much m8 all done and working

[wernley]

if i use this to remove the dreaded ipad baseband on a 3gs firmware 4.2.1 whats the best way to upgrade to 5.1.1 keeping the 05.13.04 baseband please every time i have tried to update firmware in past apple kicks off in itunes ty in advance ps after going to stock baseband if i understand correct i can update to latest firmware but will this redsnow downgrade ant baseband or just the ipad 1

[fijiman]

@Wernley
I would first back up iPhone with iTunes...then update your 3GS to 5.1.1( you need to build a custom IPSW firmware with redsn0w or sn0wbreeze)

Then use the new redsn0w tool to downgrade the baseband...

[dave.dave]

when i tried to upload the firmware my iphone is currently running redsnow shows a message "this device does not support untehered jailbreak". what does this mean? should i upgrade from 4.1 to 5.1 before i downgrade? I have tryed this about 5 times now and the bb stays on 06.15.00 and the phone shows no signal. any help would be greatly appreciated

[ferarrifeet]

when i tried to upload the firmware my iphone is currently running redsnow shows a message "this device does not support untehered jailbreak". what does this mean? should i upgrade from 4.1 to 5.1 before i downgrade? I have tryed this about 5 times now and the bb stays on 06.15.00 and the phone shows no signal. any help would be greatly appreciated

had same problem, i had to reinstall 6.15.00 baseband using redsnow then reinstall ultrasnow and mobile substrate from cydia, hope this helps


there will be an update for redsnow next week to overcome this problem with some iphones.

[dave.dave]

any news on the redsnow update?

[wernley]

Untethered jailbreak message might be because u chose wrong bootrom I got this wrong and it would not boot up then I chose new bootrom all good ;-)