Htc One Sv Need correct rom

I have already install twrp i need i can lock unlock bootloader please give me correnct rom. with process

(bootloader) version: 0.5
(bootloader) version-bootloader: 2.00.0000
(bootloader) version-baseband: 1.18.40a.00.05
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: HT2CRTP00864
(bootloader) imei: 352803050304337
(bootloader) product: k2_ul
(bootloader) platform: HBOOT-8930
(bootloader) modelid: PL8010000
(bootloader) cidnum: HTC__001
(bootloader) battery-status: good
(bootloader) battery-voltage: 3757mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
getvar:all FAILED (status read failed (Too many links))
Execution time is 73(ms)