tree 33e0729dc171f171f5cc0665e04a9487526e7da4
parent 3376d179361a9131efafa55509ad2a1515105017
author Jan Kundrát <jan.kundrat@cesnet.cz> 1699956624 +0100
committer Jan Kundrát <jan.kundrat@cesnet.cz> 1699956716 +0100

docs: clarify that a new enough U-Boot is required

These boards arrive from the factory with an outdated version of U-Boot
which is very picky about what USB disks work. Just say it clearly that
it's required to upload the U-Boot image to RAM via `kwboot` first.

Change-Id: I31c2a702db0f9833777ecb61170dd9c216296aed