Post a syscheck here.I did that but a crash dump screen appears on both 249 and 251, 250 just has a black screen.
Are you using the latest Wiiflow Lite version (v. 5.5.3)?
Are you using a usb flash drive or external hdd? And is it formatted as Fat32 32kb cluster size? Is it plugged in to port 0?
And most importantly what issues are you having exactly?