Hi, battery drain was with android systemsorry, I wasn't really clear.
download the STOCK_B140_BOOT.zip from the first post. extract it, plug the phone in
fastboot flash boot boot_140.img fastboot reboot
as for the battery drain, what are the high users of battery?
mine has been mostly idle (using the G4 as my main), but it's still at 45% after 2 days 11 hrs
Now back to cubic/cfq/ondemand ,seems ok
Will stay like this for the moment....and try other experiences later !
If you (or someone else) have suggestions........