Good morning everyone, I came to this forum to see if you could help me recover my DH-XVR1B4 since I tried to update the firmware from the USB and when it restarted it got stuck in a bootloop, it doesn't go past the logo and it restarts and so on constantly, as I already have some experience in programming and handling prompts I tried to update through the UART interface but it didn't work however I could see in the log that the XVR does look for the update. img file on the USB however no matter how much I put the correct one it shows the error "Bad Number" in addition to that I have not found more than two firmwares for this device since as you can see in the nomenclature it is the first version of the Cooper series. I hope you can help me I would greatly appreciate it.