HTC ONE M7 NO OS , Doesn't accept any Stock ROM - T-Mobile HTC One (M7)

Hi there
after 3 days of trying everything in xda and any other forum or website available i couldn't find a way to install an stock rom RUU or ZIP
the problem started when i flashed twrp and accidentially wiped system partition and now there is no os on the device.
the fast boot getvar all before this happens was:
(bootloader) version: 0.5
(bootloader) version-bootloader: 1.61.0000
(bootloader) version-baseband: 4T.35.3218.16
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 7.18.531.35
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno:
(bootloader) imei:
(bootloader) meid: 00000000000000
(bootloader) product: m7_ul
(bootloader) platform: HBOOT-8064
(bootloader) modelid: PN0713000
(bootloader) cidnum: T-MOB010
(bootloader) battery-status: good
(bootloader) battery-voltage: 3908mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-5fbd03bf
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
and now it's:
(bootloader) version: 0.5
(bootloader) version-bootloader: 1.61.0000
(bootloader) version-baseband: 4T.35.3218.16
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main:
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno:
(bootloader) imei:
(bootloader) meid: 00000000000000
(bootloader) product: m7_ul
(bootloader) platform: HBOOT-8064
(bootloader) modelid: PN0713000
(bootloader) cidnum: T-MOB010
(bootloader) battery-status: good
(bootloader) battery-voltage: 4202mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-5fbd03bf
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
as you can see the device is s-on and i couln't find any nandroid backups for it and dont have any backups unfortunately
i should say i can install custom roms and dont have any problem to do so but thats just for testing and i love the stock htc rom
trust me i'm not a noob and not a full expert and tried everything.
so any idea of what to do and how to return my device to original state?