@Momen_z Hi, it seemed like you are on the ISP customized firmware. It is recommended to check with the local support team whether they have any special tools or suggestions which could convert the...

@YASH2015 Please refer to the following link to get more suggestions: https://community.tp-link.com/en/home/forum/topic/261882

@atty Hi, Thanks for your feedback. We already have the plan to release the official firmware which would fix the SMS issue as well as add the manual band selection. Thank you very much.

@R1YUK Hi, May I know the hardware version of your Archer MR600, V1, or V2? Currently, we only have the beta firmware to automatically update the MTU size on V1; Thank you very much.

Update： Here is the beta firmware for Archer MR400(EU) V4 to manually select the 4G band:...

@Madlarc Hi, did you update the firmware from 1.5.1 to 1.5.3? Normally, it would still keep the previous configurations after the firmware upgrade; As for the backup feature, we already have a plan...