It sounds like the freeze happens right after the update switches to the new system. For Sequoia → Tahoe, this is usually related to GPU support or missing kext updates. The RX 550 can be tricky with newer macOS versions, so make sure you’re using the correct framebuffer patches and updated Lilu + WhateverGreen. Also check your EFI — sometimes the update boots into the wrong partition or an outdated EFI folder. Try resetting NVRAM and booting with -v to see where it stops. If you can share your EFI, it’ll be easier to pinpoint the issue.
