@football17 WIth the SIM card inserted into the smart phone directly, can you access internet? If so, please plug it back to the M7350 and login to the web UI....

@johnalam21 I'm afraid not; We can upgrade the firmware for the same product, same hardware version and country version only. It may damage the TL-WR842N if you install the firmware for WR840N. Good...

@yadavpawan There is no method to disable system log, and it is used to record the activities of the router and we can do some troubleshooting with the system log. Best regards.

@JJMartin The TL-WR841N supports bandwidth control only, does not support QoS. Below is the instruction to setup bandwidth control. https://www.tp-link.com/support/faq/557/ And the TL-WR841N has the...

@rainalert What is the network diagram? Is it modem--ISP router--Archer C60( AP mode)? Are you still connected to the C60's wifi but no internet or you disconnect from it totally when it stops...

@wdevefgegf Thanks for your updates, glad to hear that you solved it. For your information, the Archer C9 V5 supports fat32、ntfs、exfat、hfs+; If one of the format cannot be detected, we can change...