Just a heads up on issues i had, now solved with upgrading some(lots) of older devices running ver 4,5,6...
Following the documentation upgrade path I hit a snag at V7,2,0 or progressing past..
The archived files had the extra .gz compression wrapper, and when attempting to upgrade from the standard bin or the minimum bin or the lite bin or any straw clutched resulted with a failure
tasmota upload failed magic byte is not 0xe9
although the docs direct you to point at the .gz file i found downloading and unwrapping with 7-zip to expose the minimal.bin and tasmota.bin files resolved the problem..
Probably already well known by all here but just in case.. lets hope i stop someone else wasting an eveing..;)