RPI Mini Router

I am having trouble upgrading to latest firmware image.
Any of your images with kernel 5.4.179 work fine but 5.4.188 fails to boot successfully.
White light blinks forever, video output shows filesystem problem.
I have tried different dated releases with Rasperry Pi Imager, Balena Etcher, Windows, Linux. All the same results. If I revert to a 5.4.179 image it works instantly.

Images come from here:

Any ideas on how to fix this?

Does anyone know how to get support for something like this? I would think company reps wuld be involved in this.

So the good news is that there is a new release that apparently works: 2022-05-20 (kernel 5.4.194).
The bad news is that SEEED representatives have been completely silent and unavailable in this thread and at least one other thread covering the same issue. MAYBE they payed attention or maybe I got lucky. If you are considering a new purchase, you should take this into consideration.