Hi Michael,
Thanks for posting on the forum.
Yes, that was me that spoke to you earlier in the week, I haven’t been in for a little while myself. There were a few videos I could find online, although they were all in Chinese without subtitles and didn’t translate nicely with the built-in tools. The official instructions from Waveshare and SimCom are the first two links below, however, there’s a public GitHub repository that I found that was clearer that you may find useful instead at the bottom of this post:
Here’s a GitHub Repository that I found online that was the clearest in terms of instructions for how to upgrade the firmware on these boards:
If you find that you’re still running into the issue that you described with your SIM7600 HAT after reflashing (or you’d prefer not to reflash as these seem to be quite outdated not overly supported executables) please reply to the email that suggested that you make a post on the forum and we’ll have this sorted out for you right away from there.
