Please post the full output you get in putty, not only the commands you typed/copied in. wget will show some info/status and that's important.
And, again, no, vcgencmd bootloader_version is not the correct command to check the version of the firmware. vcgencmd version is the right command.
I already posted all of this in detail here Noise / artefacts when playing back 4K HEVC video on RPi4 + LE 9.2.1 (no problems on LE 9.2.0)
TBH if you can't follow these steps and don't understand the difference between bootloader, RPi firmware and VL805 firmware I think it's better you stay away from beta-testing and wait until the final version is released.
so long,
Hias