put into Recovery Mode (RCM). This method completely removes the need to carry a bulky computer or a dedicated hardware RCM loader dongle.
: Most modern Android phones support this, but some (like OnePlus) may require manually enabling OTG in system settings . NX Loader for Switch - Apps on Google Play switch payload injector android
: Mariko (red box) Switch units with patched bootROM cannot use RCM injection without a modchip. put into Recovery Mode (RCM)
Technical mechanisms
dev.ctrl_transfer(0x21, 0x09, 0, 0, []) # SET_REPORT []) # SET_REPORT