configure already deployed yocto build / flashing os with wifi

Question

I got my hands on an already deployed yocto system (yocto 2.6.2 - thud) on a board with a NXP i.MX 6UL Cortex-A7. My only possible access at the moment is via wifi. I have access as root via wifi with ssh. The board is embedded into a case which I can't open. So no physical access to that board - just wifi.

My further intention is to setup/deploy/flash my own OS (yocto/debian/etc.) onto this board, but I have no proper knowledge to do so...

Is it even possible to flash a new image only with wifi access?

Which step is the next one I should consider?

Are there any documentations to start with?

Thanks

Answer 1

From your comments, I mention that you have the Variscite DART-6UL module. The producer of your module provides a wiki with lots of information and tutorials on how to start work with. Variscite DART-6UL Wiki

1. How to build your yocto system

2. Ready solution for update - SWUpdate Guide

Using SWUpdate is the easiest way to achieve updates for your module.

3. Custom solution:

Another way is to develop your own mechanism. In this case, you can do developed all processes and make them fully automatic, but it is complicated and required knowledge and experience.

4. For development boot from the server

For the development time, it can be useful to use booting from TFTP/NFS server. More information here

Other help sources:

• Yocto Project - System Update
• SWUpdate: software update for embedded system
• Updating Embedded Linux Devices: SWUpdate