Help stuck in android recovery mode on htc m8

[bengben]

Hi I have been give these instructions from another forum website=
Then follow these :

Rename the RUU zip to RUU.zip (make sure you don't hide the windows extension so you won't make mistake and rename it to RUU.zip.zip)
put your device on bootloader/fastboot mode (as you get the getvar) and connect to PC
Open a command prompt from RUU folder then run below commands:

fastboot reboot-bootloader (reboot to bootloader to ensure the connection is good)
fastboot oem rebootRUU (put the device in RUU mode)
htc_fastboot flash zip RUU.zip (to install RUU)

Once complete - fastboot reboot

But when I do the third step " htc_fastboot flash zip" it just says "sending zip...." can anyone help I have attached a picture of what it says thank you

 

[Rukbat]

Either repeat the last step or, if that still doesn't work, download the RUU again. (Make CERTAIN that it's for your model M8. Flashing an RUU for a different model phone [even one letter or digit different] can cause even worse than what you got.)

 

[Golfdriver97]

When I did an RUU, I just downloaded the file from HTC, and opened the .exe file. What carrier do you have?