The original URL that explains the boot mode setting is no longer
valid.
Update to the new one.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
go to step 2 below in order to update U-Boot.
Put pico board in USB download mode (Refer to the following link for details:
-https://www.technexion.com/support/knowledgebase/boot-configuration-settings-for-pico-baseboards/).
+https://developer.technexion.com/docs/pico-evaluation-kit-boot-mode-settings )
Connect a USB to serial adapter between the host PC and pico.