How downgrade Prophet without JAFWM

[new93]

Want to downgrade form Dopod ROM (AKU2) to old I-Mate or qtek rom

Patched romupdateutility can't downgrade to older qtek or i-mate roms

Does anybody know way to downgrade ROM without using JAFWM?

[andrew_sh]

I want to know this too.
I want to downgrade in order to unlock CID.
The romupdateutility does not downgrade the ROM

[Lui-kim-Su]

Same problem here

[moghisi101]

Same problem here, except for Wizard...

[Mandingo]

Me too - need to get back from DOPOD ROM to imate ROM on my JAMin.

Anyone?

[J273]

Yea same here...there must be a way....:HOPES:

[J273]

As anyone managed this yet?

[andrew_sh]

As anyone managed this yet?
I guess not...
If only we had a custom ROM like the one BUTTON made for the wizard users....

[raskal]

Soon will be add to JAFWM the UNLOCK button :) and than no need downgrade.

Any way, i think is really not a good way downgrade the HTC's especially not for BEGINNERS because if something goes wrong the unit is dead and you can only repair it by desoldering the bga (and this requires a lot of experience) or by JTAG.

[minhbu_sg]

Soon will be add to JAFWM the UNLOCK button :) and than no need downgrade.

Any way, i think is really not a good way downgrade the HTC's especially not for BEGINNERS because if something goes wrong the unit is dead and you can only repair it by desoldering the bga (and this requires a lot of experience) or by JTAG.
ya, i thing so! if the divice is dead, we can fix it with labtool(if laptool support prophet's flash

[moghisi101]

machinagod has a solution! You do not need JAFWM.

Only the IPL/SPL can not be downgraded. So, all you have to do is cook a special ROM that has the current IPL/SPL on your device but an older OS, Radio, Extended ROM. The tools for doing this are all on the Wiki for the prophet, but should also work for the wizard and typhoon.

cya

[andrew_sh]

machinagod has a solution! You do not need JAFWM.

Only the IPL/SPL can not be downgraded. So, all you have to do is cook a special ROM that has the current IPL/SPL on your device but an older OS, Radio, Extended ROM. The tools for doing this are all on the Wiki for the prophet, but should also work for the wizard and typhoon.

cya
Where exactly are these tools? I've searched all arround the wiki.

[moghisi101]

Hey. You obviously didn't search hard enough because I found it straight away:

http://wiki.xda-developers.com/index.php?pagename=RomTools%2Ftyphoonnbfdecode.pl

Use the Typhoonbfdecode_v5 program to decode the NBF, then the prep_imgfs and viewimgfs (which actually creates a dump of the rom) to extract and view the contents.

I think you can use AddFile/DeleteFile/BuildImgfs/make_imgfs to rebuild the ROM after tweaking it, but I haven't actually done that yet myself. Other than the typhoonbfdecode_v5, all of those tools are part of the itsutils which you can find around here somewhere.

[andrew_sh]

Hey. You obviously didn't search hard enough because I found it straight away:

http://wiki.xda-developers.com/index.php?pagename=RomTools%2Ftyphoonnbfdecode.pl

Use the Typhoonbfdecode_v5 program to decode the NBF, then the prep_imgfs and viewimgfs (which actually creates a dump of the rom) to extract and view the contents.

I think you can use AddFile/DeleteFile/BuildImgfs/make_imgfs to rebuild the ROM after tweaking it, but I haven't actually done that yet myself. Other than the typhoonbfdecode_v5, all of those tools are part of the itsutils which you can find around here somewhere.
Thanks for your reply, but I already know all of this. The WM5editing tools are just for editing the rom(files and registry).
What we need is something to inter-change the portions of an nbf file.
But thanks anyway

EDIT: Also, typhoonnbftools are only able to decode, not encode probably because it is incopatible with the new header.
It shows the following error:
read 03900000 for os from 80040000-OS_0.nb
no ECEC at 0x40 in OS image

Anyone have a solution about the above error?

[g3k]

TO DOWNGRADE YOU CAN USE PDA MOBIZ CUSTOM ROM. IT'S ESPECIALLY COOKED FOR NOTHING BUT DOWNGRADING AND THEN CID UNLOCKING. PACKAGE INCLUDES THE CID UNLOCKER TOO.

I did that on a spanish Qtek s200 which came with Qtek 2.09 ROM and G3 chip. But fyi, it was not SIM locked.

Pdamobiz site has also a pdf guide explaining the steps.

One thing not mentioned in their guide is downgrade.bat giving an error and failing to write itsutils.dll to pda. I tried installing enablerapi.cab on pda and restart. It worked...

[abubasim]

See this pdamobiz (http://en.pdamobiz.com/en/forum/forum_posts.asp?TID=437) article for more information. The ROM mentioned in the article is mirrored here (ftp://xda:xda@ftp.xda-developers.com/Uploads/Prophet/pdamobiz.com_downgrade_and_unlockcid.rar) on this site.
The procedure is built around the aWizard tool and this tool is in itself enough from unlocking the CID.

[abubasim]

So, all you have to do is cook a special ROM that has the current IPL/SPL on your device but an older OS, Radio, Extended ROM.
You only need to include IPL/SPL if downgrading from a version 2.x OS to 1.x or upgrading from 1.x to 2.x.

Of course if your phone has a G4 flash chip then downgrading to version 1.x is not possible.

[uccoffee]

My Jamin is a G4 unit, can I still use the PDAMOBIZ DOWNGRADE ROM to downgrade from SPL 2.2 to 1.x? so I can flash the original JAMIN ROM and send the phone to repair ... the speaker at the back is dead ...