Hi.
I do also have one of the first ATU-15 from AloExpress, but it has a problem, with draining the battery, as the current draw doubles when going into std, or off mode.
I did use a thermal camera, to see what gets hut, and only the CPU gets hotter in this std or off mode, and i have tried all the different SW versions, with the same result, so there might be a HW problem ??
?
73 de OX3XO - Stig.