The v7 cannot enable (pressed the button or not) features not present on the RouterBOOT …
The reset button on startup are things of RouterBOOT, RouterOS may not be present.
If FACTORY RouterBOOT are older than 6.43.7, the v7 can not do anything about successfully reuse,
is why is released on the past for the first time the FACTORY RouterBOOT upgrade,
because prior to 6.43.7, a “bug” make protected-routerboot useless…
https://wiki.mikrotik.com/wiki/Manual:RouterBOARD_settings#Protected_bootloader