820-02020 wifi and serial problem

[thomamagic]

hello
i have mainboard 820-020210 with this problem
Wifi not detect in system but in recovery working and no work randomly
but i have see too in information don't see the serial number
you have idea?

 

[2informaticos]

Did you try DFU restore?
Save data first, if needed...

 

[thomamagic]

This is what I wanted to do but first I wanted your opinion

 

[2informaticos]

Do you note any previous rework, or corrosion signs?

 

[thomamagic]

All works good after dfu restore