Not a half hour job really, the auto scan, clearing codes, and rescanning will usually take 10 mins alone, and needs to be done to ensure no other faults before even attempting immo work and then again after the jobs complete. Theres the possibility of the clocks being not in perfect order, i have only had one bad second hand cluster, but took a good 2 hours exploring all options to conclude they are faulty. The dealer isnt going to plug you in for nothing.
I thought the prices i gave you were very cheap, you called me several times going over the same things, i made it clear it would be a gamble for me as i may not have the correct equipment to read the doner clocks, however i did offer to read the pin of your car and do all the auto scans so you could send your cluster off and get a mate to code with vcds. Hell i even told you your starting and other issues were likely down to a knackered battery, which you confirmed later when you replaced it! But as soon as money was mentioned, for the record, 30 regardless of outcome for my fuel, 20-60 to read pins, and 30 to program them in, you didnt call me back and now want to go to the dealer!
a well known company will read your pin via the post for 35+vat and courier. theres never any garentee with a second hand cluster that its not damaged or encrypted and unusable in this scenario. If you had a brand new cluster the swaps easy following nhns previous work.
Im sorry i cant help you now, good luck though and i look forward to the detailed write up and shared knowledge