Well, in hope to get more reliable and modern firmware on my Totolink A850R router from aliexpress.com I decided to upgrade it by TOTOLINK A850R-V1.0.2-20151104.zip from Totolink official site. So, I unpacked downloaded ZIP, started to upgrade the TOTOLINK-A850R-V1.0.2-B20151104.1609.web firmware from web admin panel, where the web form counted from 90 till 1 sec, after that page has been reloaded, I waited few more mins, and ... I figured out that my upgrade failed, with next "achievements":
- I cannot open the web admin panel http://192.168.1.1 from web browser anymore,
- both 5G and 2.4G WiFi do not work anymore, althought LAN/WAN works, i. e. my routed is not completely bricked,
- with using USB-to-RS232 TTL UART PL2303HX Auto Converter adapter I can reach RealTek bootloader console.