I can reboot the device into RUUmode using "fastboot oem rebootRUU" and as soonb as i am trying to flash a stock recovery or even a com plete zip file this happens
A guru reset rom is not a RUU nor a Firmware and is not signed neither. Guru reset rom must be flashed using a custom recovery like TWRP or CWM. Anyway this guru reset version is way to old to be flashed on your phone (look at your version-main from your getvar)
The next issue is that as soon as i hit the command "adb devices", this is being shown
You'll need to either unlock your bootloader and flash a custom rom or you'll have to flash a RUU.
I don't have the 220.127.116.11 ruu (maybe @Slim Jim Guy ?) If no, you'll have to unlock your bootloader, flash a custom recovery, downgrade your version-main so you can flash a slightly older RUU than 18.104.22.168 (like 22.214.171.124 for example) and finally take the .30 and .51 ota updates.
Instructions how to downgrade version-main at the end of this post