[Q] Hboot 1.57 Reboot looop, Help please topic

hi i have a sprint htc one m7 hboot 1.57 s-on and i was trying to get it s-off using firewater,rumrunner, so i installed a cm11 rom with the kernel and my problems began, i decided to relock bootloader to install the stock RUU but everything wiped fom my phone (including sd card, showed can't mount sd) except the twrp recovery, can't use sideload from the recovery because my phone is not recognized from my computer (only fastboot mode (though i can hear the plug in sound on windows), after a long search i found a way to format the sd card partition and my computer recognized the phone so i copied a TWRP backup i made earlier and that way i was able to have a "functional" phone again...but now i have a reboot loop, phone works around 2 min and then reboots and so on... Adb works when phone starts but since its just for a couple of min i can't do much.

i've downloaded the RUU.exe but my computer wont run it (don't know why) so i downloaded the firmware RUU too and copied it to the sd card(when it was working) and flashed it but the loop continues. I once again relocked the bootloader to try to flash the RUU via fastboot, but i get this error:

C:\Users\User\Desktop\adt-bundle-windows-x86_64-20140321\sdk\platform-tools>fast
boot flash zip Stock_Rom_m7wls_5.05.651.2_kk442_sense60.zip
target reported max download size of 1514139648 bytes
sending 'zip' (1202900 KB)...
OKAY [ 47.328s]
writing 'zip'...
(bootloader) signature checking...
FAILED (remote: 12 signature verify fail)
finished. total time: 150.761s

any suggestions? do i have to flash this firmware RUU too? http://forum.xda-developers.com/show....php?t=2795856

Thanks

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