@Marvin_S i see that in 1.12.0 version there are many changes and stability fixes. Now I can’t say that my router is working stable on current firmware build, that's why im trying to find newer...

I took newer firmware TL-WR820N(RU)_V2_1.12.0 Build 240329 from there: https://www.tp-link.com/ru/support/download/tl-wr820n/v2/#Firmware When trying to install it im getting: Failed to upgrade the...