Grmbl, grrr.
Spent two days trying to troubleshoot an embedded hardware-debugger+ARM programming IDE, but eventually we came to conclusion it has to be either a faulty driver or a faulty hardware-debugger.
Not even a "Hi! Please flash this binary-file to the ARM-device's flash." resulted in actual writes, but it claimed it did them… and sometimes showed binary flashed while sometimes all FF or all FE.
Soooo tired.
The only thing I want to use an ARM for now is to lift beers.