I installed openwrt "attitude adjustment" to rb750 without backup flash content.
Now i want to restore routeros with netinstall 6.2.
I started netintall6.2 the rb750 act led blink as usual , but rb750 doesn't appear from netinstall window.
Netinstall can find a rb450g under my configuration.
I use tftp with rb750, it can net boot from a ram version openwrt now.
How to restore routeros without backup.
I have backuped license and serial number.