HTC ONE X Custom ROM Issue I tried to install a custom ROM on my htc one X without making any backup. My new custom ROM did not installed correctly. It is just showing X type logo of custom ROM after htc splash screen. I can go to hboot, fastboot and recovery menus. I can also access the memory card. My problem is that I do not know how can I add new custom ROM on memory card so I can install it. Please help.
yesterday I had the same problem,and finally I found the solution.


Flash TWRP recovery on your one X, and power off.
Then Connect your phone to your PC by using usb cable
Boot into twrp recovery select mount &amp; storage on twrp menu and the
select Mount USB Storage,after doing this your PC should see your phone as USB storage. 
Copy your rom file into sdcard on your PC.
Disconnect the phone from PC,reboot your phone into bootloader and
then run twrp recovery.
Before flashing rom full wipe is recommended to avoid problems, so full wipe by twrp recovery or by fastboot commands (fastboot erase cache)
Flash compatible boot.img by using fastboot commands (fastboot flash boot bootfile.img)
Full wipe your device
Then flash the rom.zip by using twrp,that's all.