As an end product, how to make sure debug prints are available in G50M SOM?

When SEL0 is tied to GND, the Debug TX goes low, so no debug prints are visible.
To resolve this, remove the jumper after powering on the board.
A boot mode switch can be provided to toggle the boot mode pin. Please refer to the carrier board schematics for details on the pull-up/down values and circuitry. (For carrier board schematics and pinouts details please connect with iWave representative.

For further product inquiries, please get in touch with our sales team at mktg@iwave-global.com

Please find the detailed product information here:
i.MX 93 OSM System on Module