like in the past XX th century ? Lol
.
NO,
on Samsung it is called download mode / odin mode.
the right command is :
adb reboot download
.
NO,
fastboot commands don’t works on Samsung devices.
using “Heimdall” open sources flash-tool for Samsung, the right command is
heimdall detect
But running a windows PC for a Samsung devices easier for you is to use “Odin3” Samsung proprietary flash-tool
.
NO,
fastboot commands don’t works on Samsung devices.
using “Heimdall” open sources flash-tool for Samsung, the right command is
heimdall flash --RECOVERY /path_to_recovery-filename-for-your-device.img --no-reboot
But running a windows PC for a Samsung devices easier for you is to use “Odin3” Samsung proprietary flash-tool
.
NO,
please read the already linked documentation
.
yes,
only on some devices including the Galaxy s7 :
it can install customOS like /e/ from SDcard