ADB access must already be enabled on the head unit. Installing Strike does not unlock it. If access is locked, see Strike's ADB access help. The available method depends on the head unit and firmware ...
mu300-kernel-7.3.tar.gz mainline Linux 7.3 (stable) for mu300-update kernel 7.3: the same parts. Linux 7.2 is retired (its last release was 7.2.15) and has no bundle any more: a device that ran it ...