I’ve been looking for a little while to find the smallest thing I can type into the u-boot prompt to boot when I put the wrong value into “dtb=” within the uEnv.txt file.
Here’s what I decided so far:
setenv uname_boot_bak “${uname_boot}”
setenv uname_boot “setenv fdtfile am335x-boneblack.dtb; run uname_boot_bak”
Anybody have a better one?