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Is this a problem that could potentially be fixed via a direct serial connection to the box? Can I even use serial connection to backup my files?

Silly question have you tried factory rest via the pin hole rest button? I find something just don’t rest with the pin hole rest so I sometimes unplug the device and then with the rest switch pressed in plug the device back in.

You can reflash it via usb/sd card. If you search here for gx reset to factory defaults, you should find the procedure.

Thank you for your response. However, my original question was about the possibility of backing up the system in some way. I've already attempted firmware updates twice, which essentially performs the same function as USB flashing. I've noticed that others have reported that flashing does not resolve issues with boot settings.

It seems that the problem is not with the regular system settings, but rather with the boot settings. I didn't make any changes other than cleaning my disk, but it appears that I may have inadvertently altered the boot settings. How would a factory reset or USB flashing help in this specific situation? Because, as far as I understand, if the booting flow is somehow broken, these procedures wouldn't change that, correct?

Additionally, I'd like to ask if there's a way to save my files before performing a factory reset, as I understand this would erase my data folder and result in data loss. Is that correct?

I encountered an issue while attempting to modify my external USB disk on the Cerbo GX operating system. After making the changes and rebooting the system, I lost all internet connectivity.

Did you mess with Cerbo's filesystem? What changes?

Does anyone know if there's a way to access my data folder via a serial connection or some other method? I'm particularly interested in copying my Node-RED script from the disk before attempting a factory reset, as I'm still not convinced that a reset would resolve the issue.

It's unfortunate that the control UI doesn't include a terminal connection feature. With such an option, I could easily resolve my issue. The system functions properly in all other aspects, but the lack of network connectivity prevents me from using SSH to run any manual commands.

Given that the system isn't saved on any removable disk like an SD card, mounting it on another Linux system might be challenging? Is there still a way to access the file system?

An idea just occurred to me: Is it possible to initiate a system backup from the Remote Console to an external disk? The Remote Console is functioning perfectly, but it's limited to the available menu options. If there's a way to trigger a backup to capture my important files, that would be ideal. I'm open to any new ideas, especially since my options are limited to what's available through the Remote Console.

that costs €350, it's frustrating that it can become completely unusable with no straightforward way to reflash it externally if things go awry. A fundamental feature should be the ability to load special firmware that can wipe the system while preserving data, or at the very least, a feature to back up your data folder.

Compared to the Raspberry Pi, which allows you to easily swap out the SD card, the Cerbo GX seems less user-friendly and secure. I invested a month coding my own electrical price optimization solution on Node-RED, which performs much better than Victron's own Dynamic ESS. Because the project grew in complexity, I needed more storage space, which led me to try using an external disk. Unfortunately, what should have been a simple clean operation—possibly executed incorrectly on my part—resulted in losing all the work I've done, as I can no longer connect to the device.

It's my fault for not taking a backup just before starting, but mistakes happen. The system didn't support automatic backups for Node-RED due to an outdated Node version, so I couldn't even use Git integration for backups. All in all, this has been a rather disappointing experience.