Problem with white screen when I run any gba games

Hello

I bought ez-flash omega approximately two years on eBay

Sometimes the cart can’t save game progress unless i save many times before turn off my Nintendo ds lite ..etc

But main problem is most of gba games can’t work, I only got white screen when I run game, some of them work properly

I have lastes update of kernel, rename some games

But didn’t fixed it

I have micro sd sandisk 64gb

Is there any way to fix it ?