how can i install an old ROM ?

[fuhayer]

i am using currently AKU3.3 jester b1 and want to install JAMin's old ROM but the flasher is giving an error and asking to use a newer version of nbf file.

is there a way to install an old ROM to my device ?

[nForce]

try to cook a rom with the nk.nbf from your "old rom" using this tutorial
http://forum.xda-developers.com/showthread.php?t=271043
this rom will install on spl 2.20 also if it's for spl 2.15

when you tried installing your "old rom" it stops at 95% right?

i had the same problem with my german rom and after using this tutorial i can now use the spl 2.15 rom with my spl 2.20 prophet

good luck ;)

[fuhayer]

this can brick my phone as it is vey risky.
is there a simple way just to flash my phone to an old ROM i mean from 2.20.7.34 to 2.13.9.23 ?

[nForce]

If you had read the post of risidero carefully you would know that it could NOT brick your phone
it modifies your rom so it doesnt contain any IPL nor SPL data. they are staying untouched
the only risk is a non booting ROM which you can simply flash againt when going to bootloader (hold camera button while soft reset)


By following this tutorial, you're removing both the bootloaders (IPL and SPL) from a rom of your choice. This means that, if you don't make errors while 'cooking' the rom, you cannot completely destroy (brick) your phone. Sure, you could end up with a non-booting rom but, as long as you can get to the three colors screen (the bootloader screen) you'll always be able to install a different (or your previous) working rom.

On the other hand, messing with IPL and SPL (i.e. installing a rom containing IPL and SPL in a CID locked device) is EXTREMELY DANGEROUS and MUST be avoided in most cases!!!

Installing a 2.xx rom without messing with your phone's IPL and SPL is exactly what this tutorial tries to explain.