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View Full Version : How to get different extended rom?

Van Wilder
19-12-2006, 02:46 AM
So is there a way I can do this on my G4 8125? I've been trying, but have not been successful.
hanmin
19-12-2006, 10:44 AM
Extended ROM basically consists of large number of CAB files. Go to the ftp and get hold of some of the ROM packages in ZIP format and unzip the EXT rom. Unlock your EXT ROM and replace everthing with the one you've downloaded. Done.

Personally, I don't use Ext Rom. Upon hard reset, I just skip the Ext Rom installation and I install my stuff manually, which I think gives more flexibility. I had my phone backup-ed into an EXE file which I can use when I hardreset next time.
Van Wilder
20-12-2006, 02:53 AM
I don't know how to unlock it, and I can't even stop my Cingular one from installing every time.
hanmin
20-12-2006, 10:22 AM
To stop it from installing, upon hardreset, softreset your phone just after the security option (eg when it asked you to set your PIN for the phone). It should skip installing the EXT ROM.

I'm not sure if it is read only or not, but you can try. Download and open Total Commander (for PPC), at the top section of TC, enter this
\Extended_ROM
It will show you stuff in your Ext Rom. See if you can overwrite it.
mestrini
20-12-2006, 11:59 AM
If the extended_rom is protected like in G3 >2.xx SPLs then you have no luck there. Even if you change something and it looks like it worked you'll get bad checksums on next soft-reset and all data in extended-rom will be deleted
royorlev
14-10-2007, 03:43 AM
If the extended_rom is protected like in G3 >2.xx SPLs then you have no luck there. Even if you change something and it looks like it worked you'll get bad checksums on next soft-reset and all data in extended-rom will be deleted

exactly what happened to me.
after it had bad checksums, strange characters and folders, i formatted the extemded rom using wizard service tool ver 4.2.1
now my extended rom is empty... but i have a copy of it on the PDA in a different folder and on my PC.

Is there a way to restore it?
mestrini
14-10-2007, 08:07 AM
exactly what happened to me.
after it had bad checksums, strange characters and folders, i formatted the extemded rom using wizard service tool ver 4.2.1
now my extended rom is empty... but i have a copy of it on the PDA in a different folder and on my PC.

Is there a way to restore it?
Absolutely. Simply use WST and select the "Write ROM" option. Then select "Extended ROM" and upload the backup from your PC.
emiel_regis
23-10-2007, 07:16 AM
Hi All,
Is there any way to build own ExtROM?
Thanks :)