I was format the NAND flash and I can't restore the RouterOS on my RB450G with Netinstall.
When I start the Netinstall it can boot the router and the router is wait for the installation server, Netinstall is found them and then I select it by MAC address and select package folder and package, and click Install but nothing happens.
I select the proper package and sometimes I select the previously saved license file but nothing.
Netinstall v4.0 and v4.1 indicate "Sending offer..." for 5-10 second but the router don't see the installation server or I don't know.
I was try on all port with 3 UTP cable, 2 PCs, 3 versions of Windows but nothing happens after the router booted up the kernel provided by netinstall.
I was try some of the Netinstall versions from 3.26 to 3.30 and from 4.00 to 4.01 too.
The same thing happens with my RB433AH routerboard.