Manager has no checksum

[BeingParzival]

So after the latest update of the NSpanel Manager Add On the panel has not worked at all. Whenever i open the Web UI, I get the "Manager has no checksum" for both the installed firmware and GUI. If i try to update the firmware the panel just restarts and if i try to update the GUI everything just gets stuck on waiting.

Steps to reproduce the behavior: Just updated the add on and that broke it

Info-

• Home Assistant - core-2025.11.1
• Browser - Chrome
• NSPanelManager version - Version: 2.1.3-stable
• NSPanel Firmware version - Can't find

[tpanajott]

Unfortunately you seem to have been stuck with a really annoying bug that can happen in the old firmware. Basically, you are running the old firmware but it think it's running the new firmware. This bug has been resolved in the new firmware.

Here's how to fix it:

1. Download and extract the attached file. You will get a firmware.bin file.
2. In the web interface, navigate to "Upload" -> "Firmware" and upload the just downloaded file.
3. This new file has a new checksum and should allow you to try to update the firmware again.
4. Once that is done (or you need to try to update the firmware again), you can download this file. That is the file that is firmware that is bundled with the 2.1.3-stable release.
5. Then update the firmware on the panels again to install the correct 2.1.3-stable firmware.

firmware.bin.zip

[Kauri94]

Had the same issue with 2 of my panels and managed to update the firmware following the instructions. Thanks for the quick solution!

But then I stumbled upon another issue with one of my panels. For some reason after firmware update it did not manage to start the GUI update. Then I noticed that for some reason the panel was missing Upload baud rate. After setting it to 115200 the GUI update was able to start.