iPad 6 gen not turning on after failed update. iTunes throws error 4042.
A perfectly fine iPad went through a failed auto update from iPadOS 15.4 to 15.6.1 to never turn on again. Only detected in DFU mode in iTunes but every time iTunes throws unknown error 4042 a while after "waiting for iPad" step.
Tried updating with iPadOS 15.6 and 15.7, still same error. Searching in forums I think this is a bug in iPadOS 15.5 and above for iPad 6 gen. Has anyone found the solution?