To our gurus (DES, Olipro, lvsw, mun_rus, ...): Help me get started on ROM cooking

[ZakMcRofl]

Hello,
I may be new to this scene but I am very interested in being a helpful member of this community. Specifically, I would like to make a german GPS-enabled ROM from a romdump.

I found a lot of very usefull information on this board and the wiki. However I'm a little afraid to brick my little P3600 in the process.

So here are my questions to the XDA-Developer gurus:
1) Any suggestions on what NOT to do, i.e. which actions can potentially brick a device
2) Can I take any safety precautions that make the ROM cooking life easier or safer?
3) Could one of you help me by chat (IRC, ICQ, MSN, Skype) in case I have some specific issues?
4) Any other comments, interesting howtos or must-reads?

Thanks in advance, I hope I'll be able to pull this off.

PS: Also if someone with a german GPS-enabled ROM reads this, please contact me! I need a romdump first :)

[mun_rus]

1) Any suggestions on what NOT to do, i.e. which actions can potentially brick a device

1) Use aChefs utils 2.0 only.
2) Don't forget to check your ouput OS.nb file with OCchecker by Olipro
3) You should have SPL 1.01 MFG, coz if your device doesn't boot you wont be able to use sspl for downgrade.
4) Read more about bootloader commands
5) Don't use special tytn's tools for rom coocking, coz there is some difference. You have big risk to brick your device if you flash it.
6) You need some resource editor tool and you should know how to sign the ouput files
7) You do all at your own risk

[ZakMcRofl]

Thanks mun_rus that is very helpful.
Concerning 5): I intend to follow these tutorials:
http://wiki.xda-developers.com/index.php?pagename=Hermes_HowtoDumpRom
http://wiki.xda-developers.com/index.php?pagename=Hermes_HowtoReconstruct
As far as I can tell all those tools are not TYTN-specific, right?

By the way, I think its great that you give "newbie"-cooks a chance. Maybe I'll soon be able to return something to this great community!

[mun_rus]

Concerning 5): I intend to follow these tutorials:

Use aChef tools for creating dump and reconstructing a rom) it's more easier

[ZakMcRofl]

If by "aChef Tools" you mean this: http://forum.xda-developers.com/showthread.php?t=294364&highlight=achef

I don't see any mention of a dumping tool. Maybe i used the term cooking wrong: I want to produce a flashable ROM from a ROM dump that somebody else will do.

In my mind the steps should be:
1) Dump german GPS ROM
2) Extract all files from part02.raw
3) Reconstruct os using any proper tool (you recommend aChef)
4) Check os.nb with OCchecker
5) Flash os.nb to my Trinity (install Hard-SPL first)
6) Flash radio ROM with GPS support to my Trinity (actually its already on there
7) Enjoy german GPS rom
8) Make it easy for others to flash, maybe package of OS and radio ROM.

Any corrections?

[prsnow]

...You should have SPL 1.01 MFG, coz if your device doesn't boot you wont be able to use sspl for downgrade...

mun_rus, where can we download this bootloader version? I am in desperate need of it.

Thank you!

[mun_rus]

mun_rus, where can we download this bootloader version? I am in desperate need of it.

Thank you!

Ive got this bootloader when i unlocked my phone with imeicheck unlocker. I don't know where you can download it.

[stepw]

Ive got this bootloader when i unlocked my phone with imeicheck unlocker. I don't know where you can download it.

But you won't dump it and post it here, will you?