@Kevin_Z  thank you for your response :D

PFA the snapshot you asked for. 

Yeah the problem is only with the 2.4ghz band, router randomly stops internet on one of the devices for like 5 seconds and works fine for other devices at the same time, it happens to only a specific device chosen at random.

@_pankaj_yadav_  I think your router did not accept the firmware version because your firmware version corresponded to hardware version 4 whereas your snapshot shows hardware version 5. Also, if INWISP stands for Indian market WISP, hardware version 5 has latest firmware in tplink.com/in website. However, Kevin confirmed that no latest firmware is available for this market. If you want, you can check with him again though cuz I'm no expert.
P.S: Also read my subsequent post on your thread

_pankaj_yadav_ wrote

@Kevin_Z  thank you for your response :D

PFA the snapshot you asked for. 

Yeah the problem is only with the 2.4ghz band, router randomly stops internet on one of the devices for like 5 seconds and works fine for other devices at the same time, it happens to only a specific device chosen at random.

 

 

 

 @Kevin_Z   I'm also experiencing similar problem with my 2.4 GHz band. Rebooting the router solves the issue temporarily. However, the issue recurs. So I thought of upgrading my firmware version. But before doing that, I came across this thread and thought of seeking the best solution. Should I change the channel manually as some of my neighbours also use tp-link routers and repeaters/range extenders though it is less likely as this issue has been occurring recently only? Currently, my channel setting is in auto. Or should I just upgrade my firmware? Mine is the same router specifications[Archer C20 Hardware version v4 Firmware version Build161130] as provided by pankaj initially[not the snapshot above] ;the only difference being it isn't INWISP[as shown in snapshot above] although I'm from India. So,if upgrading the firmware is the best solution, should i download the firmware from indian region or global region? Thanks in advance.

Kevin_Z wrote

@beb25 

 

Hello, thanks for asking again.

 

If your C20 V4 is a generic version for the global market, you can update it to the latest firmware on the local website first then monitor:

https://www.tp-link.com/in/support/download/archer-c20/v4/#Firmware

 

Below is the guide to upgrade the firmware:

https://www.tp-link.com/support/faq/2139/

 

If there are still wireless disconnect issues, try to change the 2.4GHz wireless channel to 1/6/11 as I mentioned earlier when replied to pankaj.

 

Thanks.

@Kevin_Z Thanks for your response and the links too. My router doesn't support TP-Link Cloud service. Hence, I'll have to upgrade manually which i was kinda prepared for earlier. However, I had one more query before upgrading. There are two subsequent releases to my current version as per the ones found in the first link. Can i directly upgrade to the most recent one or should i upgrade in the release order? 
Thanks in advance for your patience in answering my queries.