I have tried to copy the roms that I have to the NOR memory, all the ones I have tried the writing process appears but then in the NOR tab I do not get anything, I do not know if I have to enable something specific or what.
On the other hand, when I give the switch from A to B to put the B mode with the link activated, I turn on the console and only the letters game boy comes out, from there it doesn't happen, and I don't know why
Can you provide a video of your operation which write the rom to the NOR?
Even if you don't have permission to post links or embedded youtube videos here right now, you can just post the last string of characters of the youtube video link.
The switch toggle to B with link mode but no Nintendo logo means there is nothing on the NOR.
First of all, Nor operation requires a high current, it is recommended to plug in the power.
1. Try to format the NOR flash, you can access the menu in NOR tab and select format NOR option
2. If the format process ends in 4-5 minutes, you can try to rewrite the game again.
3. If the format process falls into an endless loop and never end more than 10 minutes, turn off the console. contact dealer for replacement or read the repair guide #10 https://gbatemp.net/threads/basic-repair-guide-of-current-ez-flash-products.601332/