[Q] No WiFi, can't upgrade firmware - S-ON hboot 1.56

Hello everyone, I need help.
I' was not using my HTC for some time, but yesterday got back to it 'cause I needed a second phone. As usual, I updated to the latest version of Viper b(9.0.0), but my WiFi isn't working... Tried to rename the wifi direct to something shorter, did't work... Tried to aply de wififix from IC, neither (stuck on bootscreen after patching)...

As I understood it's a firmware problem, tried to update it too, but encountered some problems:
1- My device is S-ON and the hboot is 1.56;
2- Couldn't figure out how to S-OFF it or how to downgrade hboot nor how to upgrade the firmware with S-ON and this hboot...

my getvar stats:

Code:

---

version: 0.5
version-bootloader: 1.56.0000
version-baseband: 4A.17.3250.20
version-cpld: None
version-microp: None
version-main:
version-misc: PVT SHIP S-ON
serialno: *
imei: *
meid: 00000000000000
product: m7_ul
platform: HBOOT-8064
modelid: PN0712000
cidnum: CWS__001
battery-status: good
battery-voltage: 4201mV
partition-layout: Generic
security: on
build-mode: SHIP
boot-mode: FASTBOOT
commitno-bootloader: dirty-bee46337
hbootpreupdate: 11
gencheckpt: 0

---

My bootloader looks like this:

Code:

---

*** TAMPERED ***
*** UNLOCKED ***
M7_UL PVT SHIP S-ON RH
HBOOT-1.56.0000
RADIO-4A.17.3250.20
OpenDSP-v31.120.274.0617
OS-
eMMC-boot 2048MB

---

Can someone point me the way?

PS.: Sorry about my limited English...