@3_abbs_3 Hi, may I confirm which wifi band do your iPhones connected to? And what is the model and iOS of your both iPhones? Also, please share the firmware version of your Archer AXE75.

@VANTECH Hi, you may follow this thread to try again. Please try to use bin file instead of GGL.

@S1687 Hi，may I confirm the exact the issue of your TL-MR6400 V4? Is it "India Jio SIM stops working on TP-Link LTE Gateway Routers after upgrading to 5G"? Or only whether there is any firmware to...

@SHIVRDM Hi may I confirm what is the current firmware version of your Archer MR600 V3? And why do you want to downgrade firmware?

@Jettaz The speed can be affected by lots of factors, if you are experiencing low speed issue on TP-Link 4G LTE Router, please follow this article to troubleshoot: How to troubleshoot if I have low...

@TWTom Hi ,the two external antennas are 4G LTE antennas, which are different from ordinary wireless device’s antennas. This antenna is mainly used to receive 4G signals from ISP by auxiliary SIM...