Super simple for anyone to do. U8150(T-mobile Comet in US) on xdadevelopers thread. Downloaded z4root on my M835, downloaded UJ custom recovery, downloaded dronix version 0.4. Transfered all to laptop via usb mass storage mode. Sent ES file explorer to Comet. Backup of all files to laptop, backup all current apps to pc, transfer all three downloaded files to Comet. Take a break. Reread instructions on following procedures. Installed z4root apk, ran z4root to gain root access. Connected Comet to laptop with usb, then turned on phone in fastboot mode. Extracted zip file onto desktop, open UJ folder, run os appropriate exe, phone reboots itself. Turn it off, hold volume up and green key press power boots into new recovery menu. Create a nandroid backup, then reboot. Plug back into pc to copy nandroid to desktop(never rename file, just the new folder for successive backups) I then unplugged from pc. Now boot back into recovery, wipe all appropriate options, partition sd ext, flash zip, reboot. Setup apps2sd with romtoolbox, oc'd @641mhz and running smooth. Tested for five days with no issues. Thank you's for Esteban Sannin (I see my developer very well, salud), wachw @ xda for the guide, Ultrakiller for the recovery.
Recovery: http : //forum.xda-developers. com/showthread.php?t=1053704
Rom: http : //forum.xda-developers. com/showthread.php?t=1057487
I use antutu cpu master and android assistant, both free on market, to keep my androids running quick, plus es file explorer and taskmanager for file utilities and such. Good luck, and remember, I use google and androidforums, anything can be accomplished.