bro there are a plenty of tutorials out there on how to install.. and the fr frameware seems to have some probs. go for a geniric global one. no probs at all. or else, try my installation procedure.
what i had is 136 in c6903 with locked bootloader , zxrecovery with root.
1) i downloaded generic global for 6903 and advanced kernel v2 by doomload, and deodex patch by nut, and striped ftf (which doesnot contains data partition,system partition, and cache, and it wont wipe anything,. it contains everything else, kernel, baseband ,TA, bootbundle, bla..bla..bla)
2) now installed latest flashtool 9.15
3) and then backed up my TA with TA backuptool latest version
4) now i unlocked my bootloader
5) and then flashed the ftf , with every thing ticked in "WIPE" and nothing ticked in "EXCLUDE"
6) rebooted, after setup, i rebooted to fastbootmode, flashed advance kernelv2,
7) again rebooted to recovery, flashed deodex patch, and latest super su package
now u can stop here and just reboot and use ur phone , nothing is not working, everything is fine OR if u need to relock and use original kernel continue to 8th step
8) reboot to check if u have proper root and everything..also remb to remove the sd write permission problem.. and install recovery(zx dual recovery latest beta) now....( coz we are going back to stock kernal , relock TA, and currently a buggy recovery, also a RIL restriction--> u cant write anything to system partition even u have root, but can perform other things which need root privilege)
9)reboot into fastboot mode again and flash the striped kernal for ur device ( WAIT..... THERE IS A TRICKY PART... THE STRIPPED FTF MAY NOT BE ALWAYS FROM UR REGIONS FTF OR THE GLOBAL ONE, AND MAY CONTAINS DIFFERENT RADIOS,TA CUSTOMIZATIONS ETC. SO IT MAY( a 10% chance) GET MESSY WITH THE FIRMWARE U FLASHED... SO THERE IS A WAY TO FLASH ONLY THINGS U WANT FROM UR FTF FILE (the whole ftf and not stripped ftf), THE WAY IS .... reload the ftf to flash tool(in flash mode ofcourse), and then SELECT SYSTEM from "EXCLUDE" and UNTICK everything on "WIPE" now the remaining files will count 12 ( check attached image to refer), and then flash it.
10) now reboot, yes u have a partial rooted( ril problem) , deodexed firmware with everything stock. now.
11) just restore the TA ( dont use lock TA from flastool, use TA tool to restore)
12) reboot, enjoy working everything!
DUDES... U KNOW WHY I TYPED ALL THESE STEPS HERE??? BECAUSE PLEASE DONT MESS UP THINGS AND THREADS WITH " IT IS NOT WORKING, PLS HELP ME things" WHILE ALL OTHERS ARE DISCUSSING SOMETHING ELSE. IF U NEED HELP QUICK AND CLEAR, POST UR PROBLEMS WHERE THEY ARE DISCUSSING ABOUT IT!