Problem going back to original ROM

[infowiz]

I've done some experimentation with custom ROMs but now I would like to return to my original ROM.

I have a CID-locked G4 (IPL/SPL 2.18.0001) and this file RUU_Prodigy_2170702_21707102_20710_QTEK_WWE_Ship.e xe which I thought would return my Wizard back to its original state. However when I try to do the update it aborts with an error, which I think is due to the fact that the ID of the current ROM (or something else) is not the one expected...

I noticed that some custom ROMs have a special noID RUU. Can I simple use this with the official nk.nbf?

I also noticed that the official nk.nbf contains IPL/SPL. Will this brick my device?


Thanks!

[mestrini]

Have you noticed the Wiki or the search feature?

[infowiz]

Por acaso ate ja o tinha feito. E a pesquisa deu-me algumas indicacoes de como deveria resolver o problema, mas de qualquer das formas fiquei com duvidas se devo ou nao extrair o IPL/SPL da ROM, e se o fizer se mesmo assim nao ha problema.

So queria mesmo garantir que nao ia deixar o telemovel num estado irrecuperavel.

De qualquer das formas muito obrigado pela excelente ajuda!

[mestrini]

Por acaso ate ja o tinha feito. E a pesquisa deu-me algumas indicacoes de como deveria resolver o problema, mas de qualquer das formas fiquei com duvidas se devo ou nao extrair o IPL/SPL da ROM, e se o fizer se mesmo assim nao ha problema.

So queria mesmo garantir que nao ia deixar o telemovel num estado irrecuperavel.

De qualquer das formas muito obrigado pela excelente ajuda!

Although my mother tongue is same as yours it's best to write in English so that others can understand what's going on here. It's a matter of good judgment and consideration for others (since moderators do NOTHING to avoid it). Off the chest... :p

You could have said in your post that you had already searched before posting your questions and that you were doing it because the matter wasn't clear for you. It could have spared us all three (useless) posts and the sarcasm in your appreciation :rolleyes:

Ok. This is how it goes then. The G4 CID locked devices can only be flashed with an original flash from same provider since the bootloader checks the nk.nbf signature. Read bellow...

pubkey encryption in newest roms
i noticed that bootloaders starting with version 2.x.y.z use a publickey to verify the signature of uploaded nbf before flashing them to rom.

this makes it less than trivial to create a rom modification tool.

the last 1024 bytes of each section in the nbf contain the signature.

willem


Since G4 devices only have 2.xx IPL/SPL it means that any nk.nbf that is edited (to remove the IPL/SPL like the ROMs with ruu_NOID) the signature gets void. So unless you SuperCID your phone or get the exactly same ROM or another with same ID you won't change your IPL/SPL (only the OS)

You can however use my tool or mum's tool to flash any OS image...

Cumprimentos, fica bem ;)