narqval
I finally manages to complete everything. You are right, I have to use XS++ to upgrade from CID 49 to CID 52. As long as I follow all the procedure it became apparent that all this tutorial and advice was on the right track.
However I got the scare of my life when after I did everything (upgrade, flashing and then unlocking by patch) and after testing it ok......the 2nd time when I turn on the hp, it went dead. Totally black.....with red light blinking 5 times (EROM dead).
I panic. I went googling etc.......was supposed to be easy to recover but then setool, xs++ both could not even recognise the hp. No communication port.....nothing. After doing some analysis and try and error, I suspected something to do with the driver. So I uninstall the usb driver and reinstall it again and did a few tries. At last setool manages to read my hp. So after following instruction and press repair.....EROM was ok back. Had been using it for 2 days now. Seem ok. Touch wood :)
Thanx for the advice and support.
Next project would be my dad's k750i which he got cheated by the authorised SE people. Send in for repair and yet those unscrupulous SE technician mess it all up and charge him exhorbitantly. You have this phone ?