Solved,

The programmer that came with the bin file (FlashESP8266.exe) did not work. Now i used the Nodemcu programmer and that worked well!!
Now i have ESPEasy_v2.0.0-dev10_normal_1024.bin flashed on my Sonoff 4 channel.


THX

Have somebody solved this problem already? i also have a sonoff 4ch. flash looks ok no errors. but no esp01 on wifi.

Hope somebody kan help me, drives me crazy