iPhone 7 iTunes Error -1 Analyse and Solution

iPhone 7 (820-00189-A) Intel Baseband Model. iTunes Error -1, measure voltages on Logic Board with help of schematics. And Found out XCVR0_RF (2nd Transceiver RF IC) is faulty. iTunes Error -1 arise from various situations. Better to inspect the Logic Board and measure abnormal values before making any decision. Hope this video will help. :-) 1). Heat Insulation Silicone Repair Mat http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=162656879443 2). Flux http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=162494582390 3). BGA Soldering Paste http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=162677306065 4). Desoldering Braid Wick http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=162540321500 5). Mobile Phone Repairing Circuit Boards Holder http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=162549956665 6). Stainless Steel Precision Straight Tweezers http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=162550109662 7). Stainless Steel Precision Curved Tweezers http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=162550905242