project update,
after getting fed-up trying to sort the t17+s with messed up hashboards decided to sell them all and never buy t17 or anything from the 17 series ever again, managed to score some Avalons 1166 from a farm that closed down in China only 3 months used and still under warranty so I decided to immerse them instead
https://imgur.com/GiwPVjWjust received the Avalons, they run sweet with good hash rate and feels good to buy asics under warranty

would appreciate any recommendations for firmware upgrades for the 1166 for immersion and air-cooled
Meanwhile preparing the space where the pool goes and as soon as I have something that's worth watching will post some pictures.
many thanks