Oh I wish he could sort it himself, Satanata, but like me he's a total technophobe with no patience!!!
Well, the good news is, no matter how big a technophobe he is, he'll still manage it no problem.
My own set, bought in or around 12 months ago, started with an initial set up screen where one of the first options was "Scan" for channels (can be done manually at any time to recheck for new channels available by holding some button or other). It took one button and then just leave it for about five or ten minutes (think it actually took less than five to pull in 60 or so channels).
No need to do the manual adjustment of numbers if it's not something he'd enjoy doing (I just knew the channel numbers I'd used on the TV for a given channel for years, so faster for me to adjust than to learn new numbers to the same channels I'd had before), but again, a very simple task clearly explained by most if not all suppliers (all detailed very clearly in the book which will come with the set).
Worst case scenario, pop on here with the exact make and model of the set and someone will walk you through each step you need (you really won't need too, it's all very user friendly now. If you can figure out how to plug it in you'll be able to sort the channels [warning, do be careful it doesn't come with a two pin plug without an adaptor or that could be tricky

]).
Your best bet with the loan is (if you're fairly sure you'll make the lump sum payment) take the IF option [as long as no hidden costs, total cost should be price listed (so €370 in payments and lump sum of cost - €370)] and have a seperate bank account set up to save for the lump sum. Have DDs take money from your CA each month so that the full lump sum is in the account on month 9 and then clear the loan in full getting written confirmation that all is clear from the lender. No harm in getting 10 months interest free if it's for the product you want at the price you want.
Hope it goes well.
Sat.