@Alikheri 

Hi

The MR400 V1 does not currently have a beta version available. I will make a note of your request and pass it along to the relevant department for evaluation. However, given that the MR400 V1 has been on the market for several years, we cannot provide confirmation on the possibility or timing of a beta release. Thank you for your understanding.

@Joseph-TP

Thank you for your response. We understand that the MR400 V1 does not currently have a beta version available, and we appreciate your note to the relevant department for evaluation. However, we would like to bring to your attention that this router was successfully connecting to 4G networks up until about three months ago. Since then, we've encountered issues with connectivity. We would greatly appreciate any solution or workaround that could help restore this functionality. Thank you for your assistance.