Htc one M9 software update issue

[AC Question]

Hello guys, I'm unable to update my m9 with an ruu from android 5.1 to android 7. I keep getting an error message during the ruu setup; error 132 signature error. My phone was S-off by default.
it is htc hima uhl with radio version 01.04_U11440601_71.02.50709G_F. Flashed 3 diff ruu's and I get the same error..please help me friends. Just bought it yesterday

 

[neo905]

Hello guys, I'm unable to update my m9 with an ruu from android 5.1 to android 7. I keep getting an error message during the ruu setup; error 132 signature error. My phone was S-off by default.
it is htc hima uhl with radio version 01.04_U11440601_71.02.50709G_F. Flashed 3 diff ruu's and I get the same error..please help me friends. Just bought it yesterday

Why on earth would you buy this phone will all the other better options out there?