LG G5 Broken volume buttons stuck on boot screen

[VWME]

Hi guys,

My LG G5 (H850) is stuck on the LG screen, the volume buttons don't work, so I can't use them to get into the recovery (TWRP)...

I have tried to use ADB to reboot to recovery, It recognises the device, but it also tells me: "Device Unauthorised", it wont even let me in using shell commands...

I'll admit to not being the most versed in ADB.

If you have any ideas that could help then great, if not, then im going to be replacing my volume buttons haha.