Downgrade Baseband from 6.15 to 5.13

[udo.joint]

Muze to byt realne??

I managed to downgrade Baseband from 6.15 to 5.13 using fuzzyband.

I was suck with recoving mode after upgrading 4.2 with bb 6.15. If you want restore anything from here everything will fail. Just follow the below process to get up and running.

Iphone 3G Bootloader 5.8 can downgrade to 5.13. If you have 5.9 and above, you can restore to IOS 4.1 with bb 6.15

UPDATE for : Iphone 3G Bootloader 5.8
1. Restore your phone with IOS 4.1 using Itunes (Download the IOS 4.1 and Press Shift and Restore. Select the IOS 4.1 and restore)
2. Once Restore is done. It will give error. Don't Press OK Just close the Itunes from Task manager.
3. Download the RecBoot and execute. This will kick phone out of dfu mode.
4. Use Redsnow 0.9.6b4 and Jailbreak the Phone.
5. Unlock the Phone using Ultrasn0w 1.2

Now If you want to downgrade your Baseband.

1. Download the file --> SiNfuL iPhone
2. Install Fuzzyband from Cydia
3. Download [zakázáno]
4. Connect IPhone to Compuetr
4. Open [zakázáno] and click on /Raw file system/Applications/Fuzzyband.app
5. Copy the ICE2-06.15.00.cert file
6. Now open Fuzzyband in Iphone
7. You can see current 6.15 and downgrade 5.13 Press downgrade, Thats it

Now it will downgrade your baseband to 5.13. Now you can enjoy installing again 4.2 or whatever....your phone is back to normal.....

UPDATE for : Iphone 3G Bootloader 5.9 and above

1. Restore your phone with IOS 4.1 using Itunes (Download the IOS 4.1 and Press Shift and Restore. Select the IOS 4.1 and restore)
2. Once Restore is done. It will give error. Don't Press OK Just close the Itunes from Task manager.
3. Download the RecBoot and execute. This will kick phone out of dfu mode.
4. Use Redsnow 0.9.6b4 and Jailbreak the Phone.
5. Unlock the Phone using Ultrasn0w 1.2

You can't downgrade your Baseband as of now. But enjoy with 4.1 till something releases for downgrade baseband for BL 5.9 and above...

[dwick]

Samozrejmne ze to je mozne pro bootloader 5.8. Ovsem ten maji jen a pouze iPhony 3G z prvnich par tydnu vyroby, takze je velice mala sance, ze by tenhle iPhone nekdo mel.

[udo.joint]

A jak se da jednoduse zjistit jaky mam treba bootloader.Diky

[dodulo]

napr. utilitkou f0recast od iH8sn0w

f0recast v1.2

[udo.joint]

Dekuji zdvorile .

[michal29]

ked som dobre pochopil tak z 5.8 sa to da vratit baseband ale s 5.9 sa neda ? ci ? lebo mam presne 5.9 a GPS mi neide ..dakujem za odpoved

[dodulo]

Ano ked mas verziu bootloaderu 5.9 tak downgrade basebandu neurobis.Ak mas iPad baseband 06.15 tak gps nespojazdnis

[hikonor]

Na možnost dwngrd 6.15 na 3g čekam jak macek už pár měsíců...staroušek mi leží ve skříni, sleduju co se dá ... nemate někdo alespoň tuchu jestli to nekdo, a zda vůbec , rozlouskne..? ps- vim ze je to blbost, ale proc vubec nejde dwngr bootloader..? nebo proč alespoň nefunguje ofiko cesta, kde bych došel se sklopenými ušmi, třikrat odříkal otčenáš před ikonou SJ a oni by me prijali zpet do svých řad...?

[Re4DeR]

jojo