We are trying to manually roll back the legato version of the WP7609. We have tried this on multiple WP7609 Modules with no luck.
The WP7609 seems to be stuck at Legato version 21.05.2 and we want to get back to 19.11.6.
The modem FW does change up / down, but we have not been able to get to an earlier version of Legato.
We ARE able to manually change Legato version using WP7601-1 up / down, so this seems to be a WP7609 related issue.
The current SW versions being used in the WP7609:
The Version we are trying to install in the WP7609:
We have tried:
One Click Tools (12.0.1 to 17)
fwupdate with base legato version 19.11.6
swiflash with base legato version 19.11.6
Nothing seems to be working for the WP7609, but it does work for the WP7601-1.
For context, we are trying to roll back the version because we have a custom yocto compilation that is working in the WP7601-1 (with legato version 19.11.6) that is not working in the WP7609. When we install it in the WP7609, the system rolls-back automatically to 21.05.2 and the custom image with 19.11.6 is not present. We would like to use one yocto compilation between WP7601-1 and WP7609.