How to unlock the bootloader of HTC One A9?

I **forgot my password** so it **got formated**, I was gonna just **set the phone** again but the thing is my phones **WiFi does not work** *(Maybe because of the firmware)*. So I thouht I could use **Mobile Data** but I need to **set the APN** and the **Tools button is grayed out**, so I can not do that *(Is there a way?)*. So I think the only way I might have is to **re-flash its stock OS**. And I started trying that. But.. when I try to flash the **ZIP RUU** i downloaded from XDA Forums using the flashing tool they provide *(I tried others but got the same output)* i get this error when the second zip is being written (bootloader) ERR Update zip file failed. (bootloader) ERR ZIP ERROR, exit read zip loop (bootloader) ERR ZIP signature checking failed... (bootloader) Update zip file OK (bootloader) ERR ZIP ERROR CODE, 22 (bootloader) end@Done I looked in Google and found that this maybe because the download is corrupted so i downloaded again but i got the same. Then I tried to flash the firmware because maybe it could be that but I get that same error. So as i looked more i thougt maybe is was because my **bootloader is locked** so looked in how to do that and followed the instructions in HTCDev for my specific model but the *fastboot.exe* file i got opens a terminal window but closes in a second so I did it using the *Open PowerShell from here* method but then **instead** of the response i should get as the **instructions** said i got this error (bootloader) [KillSwitch] : /dev/block/bootdevice/by-name/frp (bootloader) [KillSwitch] Last Byte is 0X00, disable unlock (bootloader) [KillSwitch] oem unlock Turn Off! I looked for this in Google and a **forum comment** says it might be like a **protection** because of the reset, What can I do about this if I need to get my phone working again somehow?