Hello, I've been using gw's payload to use my gw card alongside with luma (a9lh). It's been working fine until this day. I launched gw menu and tried to get in updated sysnand mode but i just got a blackscreen after doing the botton combination, after that i had to force shutdown and try again but this time i noticed flickering on the left side of the screen(mostly corners)on the gw menu. I got blackscreen again and can't use gw's payload.It's not big deal but this flickering thing won't go away now. It's always there. I tried to play with brightness settings to see if it'll go away, no luck. I also removed gw card and the battery, again no luck. I'm in need of help.