I wasted a day trying to install devmenu but it keeps freezing at the logo screen. Now I know why it happened. It has nothing to do with ExFat/Fat32, SDcard or filename, etc. The problem is the file attribute for the SXOS folder and it's subfolders. I hope this will help out some of you with the same problem.
The devmenu I use has the romfs.bin decrypted, so it's a folder with 4 sub-folders inside (I know there's a version of devmenu with just a romfs.bin). I don't know if it makes any difference but try to get the decrypted one.
Use the command prompt and enter this:
attrib -r x:\sxos\*.* /s
attrib is the command
-r is the flag for removing read-only attributes
x:\sxos\*.* is the drive of your sdcard and the folder sxos, plus wildcards for all files
/s is the flag for doing all sub directories and files
The devmenu I use has the romfs.bin decrypted, so it's a folder with 4 sub-folders inside (I know there's a version of devmenu with just a romfs.bin). I don't know if it makes any difference but try to get the decrypted one.
Use the command prompt and enter this:
attrib -r x:\sxos\*.* /s
attrib is the command
-r is the flag for removing read-only attributes
x:\sxos\*.* is the drive of your sdcard and the folder sxos, plus wildcards for all files
/s is the flag for doing all sub directories and files
