This worked for me: (1) Enable Developer options (2) Enable debugging (3) Get the Google USB Driver (4) Install OEM USB drivers (5) Run Google Pixel - Update and Software Repair
Thanks for the guide, I successfully replaced the back cameras with its help.
Unfortunately I damaged the screen somewhere in the screen removal steps, it now has a vertical white stripe of about 1/2 inch at the center; it happened somewhere between step 1 and step 10, I know because while sliding the pick across the right edge I accidently turned the phone back on and saw the stripe for the first time; it is unclear to me exactly what caused the damage.
During the removal procedure, make sure to insert your opening picks in the right position to avoid separating the screen from its safety frame.
It was not clear to me what the safety frame was until I opened the phone; I was careful but while opening the phone I slid a pick between the screen and the frame, and they became separated in one corner, I wonder if this resulted to my screen being damaged after the repair.
An image that shows what the security frame is would be helpful.