@Kevin_Z i bought it from amazon india by my self. not provided by any ISP. so it's not possible that it is customized version by my ISP. anyways here photo of back.

i can't update firmware to latest version/release. downloaded formware file from my regional download center (INDIA) => url - https://www.tp-link.com/in/support/download/archer-c20/v5/ firmware file...

@Solla-topee yes it is stable via direct broadband connection. it is stable via router too. but whenever it disconencts router won't reconnect automatically (sometimes). today morning same thing...

whenever my connection goes down the router won't reconnect to it again. line is in good condition everything is in ok in modem. but router won't connect. if i'll try to connect manually from router...

i am unable to update my router's firmware version. it keeps showing wrong file. extracted from zip too. and selecting .bin file for it. trying with this firmware update. link -...