I have a Pi3b and an PI3b+ Also I have 2 USB Sticks with different versions of Raspian
both Sticks boot on the PI3b+, none is booting from the Pi3b
I followed the procedure to set the usb-boot flag (Pi3b), and it shows the correct value:
vcgencmd otp_dump | grep 17:
I also read about a beta bootloader update of the Pi3b from „next“-branch.
But all manuals I found so far are several years old.
Is is a.) necessary to update the bootloader (can one check the installed and the availible versions)?
and b.) is it still beta after this many years?
Can you suggest a good manual or is it just that "sudo BRANCH=next rpi-update"?
checking the current 32Bit installation on my SD Card gives:
LC_ALL=C apt-cache policy raspberrypi-bootloader raspberrypi-kernel
so the installed bootloader seems to be pretty current.
How to check if the bootloader flashed to the device (not the SD Card!, the PI itself) is this current version?
Also, is this current version cabeable to provide USB Boot?