it seems that some people are a little confused and can't apply this JB leak, so I'll try to make it a little clearer.
First, that it will work even if your bootloader is LOCKED because the required ROMs are signed.
The JB leak is an OTA. It comes on top of an existing ROM already installed on your device. This OTA is specific to the stock ICS 4.0.4 SFR ROM and therefore will only apply to this particular ROM.
To get JB on your XT925:
1/ Apply the
stock ICS 4.0.4 SFR France ROM (with RSD Lite). As explained above, it is mandatory. No need to reinstall for those who are already running this ROM
2/ Copy the
OTA (i.e Jelly Bean OTA 7.61.1101001.XT925.Vodafone.en.FR zip file) to the external SD Card
3/ Get into the boot menu and choose the "Recovery" option. Then choose "apply update from external storage"
4/ Browse to your OTA zip file and apply.
Job Done!
Hope it helps.
---------- Post added at 11:20 AM ---------- Previous post was at 11:12 AM ----------
i don't have any lag on mine.
Madmonkey, how have you get root on jelly bean rom?
Don't have root yet... Laging when waking up from sleep and first page left/right on the homescreen... both on stock homescreen and Apex...