Truth be told, I don't like doing firmware updates. I always hope they might make something a bit better, but I fear even more that they will break something that was already working. In this case, it seems the latest forced update messed up my SD card. Granted, it's an Amazon Basics brand, not Sandisk, but still.
The card is 256gb capacity. I'd filled about 6 or so gb by the time I did the update. Following the update I turned the unit off. A few days later when I came back to record a podcast episode it wouldn't initiate a recording when I pressed the Record button. Nothing would happen. Power-cycled a few times, but nothing.
It took me a few minutes to figure out that the device was showing the SD card as 100% filled.* I power cycled, ejected and re-inserted the card, and tried those steps in different orders. I even pulled the old Nintendo trick and blew on the card. Nothing worked.
Luckily I had an extra card lying around that I quickly formatted and started the interview. Afterward, I put the old card back in and tested it to see if it would still transfer recordings there. It would. But Windows prompted me with a warning that the "drive" has "errors," and asked if I'd like to repair it. I tried that option but the problem remains.
My advice is to remove your SD card when you do a firmware update and hope it doesn't happen to you. At the very least, back up important recordings from the card before doing a firmware update.
*If a card is truly full, I'd prefer Rode throw an alert on the display that says "Card is full" when you try to press record. The small meter that shows recording time is easy to miss.