Stuck at START SYSTEM even with no hard disc

[Black Hole]

I should added, re-flashing the boot loader is risky. If there is a power cut or the flashing fails in the middle for whatever reason then the device is likely bricked unless you have access to JTAG and the required files to flash a boot loader into a blank device.

Of course it is. A last-resort option for when there are no remaining alternatives.

Sometimes you go way beyond that and into personal insults territory.

I take issue with that, never unprovoked. Neither do I subscribe to the modern namby-pambyism where GenZ imagine they are entitled not to feel offended nor challenged in any way, and even get offended by proxy. Even disagreeing with them requires a trigger warning.