Motorola has locked the bootloaders of defy
Thus we can only use motorola signed kernels.
Defy has a froyo kernel and defy plus has GB kernel. Both signed by motorola.
Only these to can be used in custom roms. Even in ics and even in jelly bean (Android 5.0) we will have to use these kernels as long as motorola doesnt unlock the bootloader. Froyo build of ics means ics that runs with froyo kernel. GB kernel works only with red lense cameras of defy and all defy+. So only froyo build will work for green lens defy.

^^

This was exactly why i was confused. Do you mean the green lens Defy cannot be officially upgraded (either OTA or RSDLITE) to GB ? And the red lens Defy can be upgraded to GB?

Originally Posted by rogier666

Are you sure WIUI changed your kernel? ROMs and kernels can play mix'n'match.

Maybe you're right...
Android Version 2.3.7
Kernel Version 2.6.32.9-gb08c3c8

But the 2.3.7 version is GingerBread, whilst the 2.6.32 kernel version is Froyo.
So what's the point ?
The mods are always Froyo but with GB features ?

Defy with green lens can be upgraded to gb kernel but many features inculding cam may not work.
The gb kernel was extracted from defy+. As defy+ has only red lens the gb kernels works with defy red lens also.
Fully functional green lens gb kernel will be possible only when defy gets an official gb update (highly unlikely) or when the defy bootloader is unlocked(higly unlikely too).

---------- Post added at 04:05 PM ---------- Previous post was at 03:58 PM ----------

defy green lens with gb kernel may end up in a bootloop.
so thread with caution.

Flashing an GB sbf will prevent you from coming back to Froyo(Downgrading).
Always try to flash using CWM to keep downgrading options alive

Are there no "fixed" GB SBFs to keep downgrade options alive?

No defy owner should upgrade to gingerbread kernel by flashing an sbf. Our bootloader can load the gingerbread kernel, the gingerbread bootloader can't load the froyo kernel.
So when you flash the sbf you can ONLY use gingerbread kernel based ROMs from then. Otherwise you can just flash the kernel you want from the recovery.

It would even be wise for defy+ owner with bl5 and 6 to flash the bl6 froyo ROM so that they can use both builds by just flashing the right kernel.

About official gingerbread: they are for the defy+. Officially the defy has no gingerbread ROM. For some countries the defy even stays on eclair. Although it would have cost Motorola 5 min to replace the camera and battery drivers. Only problem is money for Motorola and the operators.

Sent from my MB525 using XDA