need stock rom htc one x + - HTC One X+

hi all
i have htc one x plus ... my problem that imei and baseband are unknown the mobile is working fine except that i cant make a call or use data due to imei and base band some people said do back to the stock rom and that might help solving the problem i can see the imei when using the command get var but inside the OS it gives me unknown
here is the details of my mobile
please help me me
C:\adb>fastboot getvar all
(bootloader) version: 0.5a
(bootloader) version-bootloader: 1.72.0000
(bootloader) version-baseband: 3.1204.171.33
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 2.18.401.3
(bootloader) serialno: FA32TW100894
(bootloader) imei: 353XXXXXXXXXXX
(bootloader) product: enrc2b_u
(bootloader) platform: HBOOT-T30S
(bootloader) modelid: PM3511000
(bootloader) cidnum: HTC__J15
(bootloader) battery-status: good
(bootloader) battery-voltage: 3961mV
(bootloader) devpower: 67
(bootloader) partition-layout: None
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: None
(bootloader) hbootpreupdate: 2
(bootloader) gencheckpt: 0
all: Done!
finished. total time: 0.437s
so which rom i have to install ,,, and is my mobile factory unlocked ???