hex files not compatible with -s option

[mah115]

blink_slow_teensy40.hex did not work with the -s option when programming the Teensy4.0. However, the soft reset works after recompiling the sketch with Arduino 1.8.13.

[ziutek]

The same with blink_slow_teensy41.hex. If this HEX is programmed and running the -s option does'n work.

The GUI loader 1.56 works without any problem.