It may be worth pointing out that installing the full v1.27a Blizzard provides thanks to their Legacy Downloader, does not lead to the same exact installation than, say, a 1.00 RoC + 1.07 TFT + the 1.27a official upgrade patch. This is because Blizzard has included some of the files from war3patch.mpq directly inside the main TFT mpq.