Question about SBFs

[devil1406]

Hi there,
I want to ask you maybe a noob question... But I was never flashing other SBF than original SEA froyo.
So, now, when the custom kernel came to us, I have one (only one) big problem with this, it's battery life. And I want to try to install stock Gingerbread SBF to give this kernel another try. I think that maybe this is a problem : Froyo sbf + JB rom + GB kernel + SOC defy. All in one! :laugh:
So, my question is:
Is there any GB SBF which is downgradable? Because without this kernel my camera won't work. And if my battery will be the same disaster as it is now I would like to go back to original froyo. I hope you understand me.
Thanks in advance for any tips.

 

[devil1406]

Anyone? Every information will be useful for me.

 

[_ossie_]

Hi there,
I want to ask you maybe a noob question... But I was never flashing other SBF than original SEA froyo.
So, now, when the custom kernel came to us, I have one (only one) big problem with this, it's battery life. And I want to try to install stock Gingerbread SBF to give this kernel another try. I think that maybe this is a problem : Froyo sbf + JB rom + GB kernel + SOC defy. All in one! :laugh:
So, my question is:
Is there any GB SBF which is downgradable? Because without this kernel my camera won't work. And if my battery will be the same disaster as it is now I would like to go back to original froyo. I hope you understand me.
Thanks in advance for any tips.

No if you flash a stock GB SBF there is a downgrade path to Froyo BUT it involves flashing a later BL version Froyo than your original - so you will never be able to go back to your original SBF.

You can flash a "fixed" GB SBF (may require a matching NAND backup) which won't change your BL version, or you can just flash a GB kernel (zip file, not SBF) from CWM. Or you can flash a zip ROM which contains GB kernel to try battery life. As long as you do a NAND backup first, you will always be able to reflash your original SBF and restore everything.

But no, if you flash the stock GB SBF you can't go back to your original stock Froyo SBF.

Read this excellent guide: http://forum.xda-developers.com/showthread.php?t=1216982

 

[-Danik-]

usually if you flashed Gingerbread SBF you cant downgrade (so you install only nandroid backup supporting your kernel ) .
but there's a new Chinese SBF with the CG31 and the CG33 smg files downgradable even though its GB.
i know it from milestone 2 but somehow it is possible that after you flash it (not the whole version just the "Fixed" sbf ) you will be able to downgrade as much as you want.