I wouldn't trust myself at the soldering. I made a mess of an xbox 1 a few years ago and don't think I've improved since then. I'll try to sort something with flash 360.i can sell you my nand-x kit and you can jtag it yourself
MWN are you interested?I wouldn't need to buy it, got 2 my self... Work out something with flash360 he is well known and very reliable not to mention his friendly service, but if nothing turns up then may be I can help.