First Officer reported uncontrollable vibration on the #2 Engine during cruise flight. The Flight Crew performed an in flight shut down and diverted to a precautionary landing.

Narrative

Everything from the moment we got into the aircraft at the gate; and all the way up until just after the top of climb was normal. Everything was operating normally; some MELs; but we already knew about it. The Captain went to the lav; and the Flight Attendant took the open seat according to the Company's procedures. I showed her how far we had to go and how much time we have left on the PROG page on my FMS; then I noticed an amber indication off the left corner of my eye. I noticed the LP vibrations on the right engine was 4.0 amber. All other vibrations were no higher than 0.5 and green. The entire EICAS was full. Once the Captain returned I immediately showed him. He pulled out the QRH and we ran the Engine Abnormal Vibration checklist. QRH called to slow down .02 mach; so we did. Went from .78 to .76. No change; it went to green for a few seconds; but came back to amber. It also called to descend 2000 ft.; so we did. Went from FL330 to FL310. No change; it went to green for a few seconds; but came back to amber.Then we tried again going down to FL290 and slowed our airspeed. Again; no change; it went to green for a few seconds; but came back to amber. I cannot recall if we tried a third time; I think we did; but I do remember being at FL270. We tried reducing the power on the affected engine to maintain green LP vibrations and (if I recall) increasing the non affected engine. But we weren't able to maintain airspeed. I believe at this time we were around 230 kts. and decreasing. Up until this time; I was PF (Pilot Flying). CA (Captain) decided its safer to secure the affected engine and divert. I agreed. I believe we agreed upon a diversion airport before we shut the engine down. I thought ZZZ was a good option. It was one of our bases; also one of our maintenance bases too. It was ~180nm away. CA thought ZZZ1 was a better option since it was closer (~120nm). We then both agreed on ZZZ1. We checked the weather at ZZZ1 and it showed VFR. CA requested priority handling and we got vectored to ZZZ1. At this point we switched roles. I became PM (Pilot Monitoring) and he became PF. We did hand over the controls multiple times to assist each other in other tasks throughout the diversion/descent. Basically; anytime I was reading the checklist; I was PM. Anytime CA was making a call to the passengers and FAs (Flight Attendant) in the cabin; I would be PF. Right after CA [advised] ATC and got a vector to ZZZ1; we secured the affected engine. Next; I could not recall which order these were in; but we accomplished these tasks in the order of the QRH: I got our landing speeds from the shutdown checklist. CA notified Dispatch via ACARS. CA notified FAs. CA notified passengers. I had difficulty clearing out the flight plan by dragging the destination airport to the top. CA helped; but had difficulty too. It could be a bug in the planes computer; it's an older E170. I just deleted every fix by hand. It only took about 20 seconds.Multiple descent clearances and headings. Visual app and landing XXL.