Please I need your help I want to upgade my phone to the Android 4.1 or any newer version how do i do that
There is no stock, factory version beyond ICS 4.0... BUT there are some really great custom ROMs that can be flashed that will give you Android 4.2.2 or 4.3, and probably very soon 4.4 as well. The developer community for the Rezound is very strong and has several high quality porters/coders that are constantly giving us custom options for the Rezzy.
I recommend doing some research here, you will need to unlock your phone's bootloader via HTCdev.com (possibly S-OFF is you wish), flash in TWRP or CWM Recovery, and install a custom ROM like:
CarbonROM,
Tachyon,
Talon, CyanogenMod 10.1 or 10.2, PAC-Man, LiquidSmooth, etc... there are litteraly dozens of custom ROMs available for the Rezound.
The instructions are out there, here and on most Android forum sites, in fact Mr. Smith's guide in the rooting section on this site is an excellent guide, although slightly dated (Amon Ra is no longer recommended recovery, TWRP 2.6.3.0 can just be replaced in all steps in the list).
Just do a little homework and don't be afraid to ask questions, most of the forums except XDA are pretty quiet for the Rezound, but people still watch them and will be glad to assist. The
Rezound forum on XDA is very busy, dozens of posts every day, and that is where most of the developers post there stuff.