(2014-02-17, 01:07)anshude1 Wrote: Why to deselect pre loader in step 5? Any specific reason?
Yes. the preloader is totally phone hardware dependent, it is the part that establishes communication with the phone. It is also the first stage of the complete loading process of your phone. It passes control to the bootloader (lk.bin) which in turn starts the various hardware specifics of your phone. The bootloader also provides the recovery menu (only the menu as the recovery is in a different partition) and basic boot information (like the bootanimation).
Both parts only need to be flashed if the phone does not go into recovery and seems totally dead (complete soft-bricked). If not, it is best to leave them alone.
A broken preloader can also lead to losing communication with your pc.
@d1237
Be aware that erasing or reformatting the total nand-flash of your phone also erases the preloader, bootloader and nvram, effectlively leaving your phone dead as a doornail. Better have a complete (yes, complete meaning not only imei, but all of your nvram) backup before trying.
@Gizbeat
What I'm missing between step 1 and 2 in the OP, is checking with adb if the phone is recognized and if not adding the id to the ini file. That ensures the communication and drivers are ok to be used for flash and droidtools.