Sharp MX-M550N

MX-M700N ROM VERSION-UP 10 – 6
YES
NO
YES
NO
YES
NO
Remove the BOOT Flash ROM and
replace it with a spare one. (If there is
any NG Flash ROM, replace it, too.)
Booted normally?
Write the on-board files
collectively. (4.)
Result: OK?
Result: OK?
Update completed
Update completed
Write with an empty
socket. (5.)
If the Flash ROM itself is
defective, replace it with a
new one and try again.
YES
NO
YES
NO
YES
NO
Booted normally?
Remove the Flash ROM
and replace it with a
spare.
Write the on-board files
collectively. (4.)
Result: OK?
Update completed
Write with the empty socket.
(6.)
Result: OK?
Update completed
If the Flash ROM itself is
defective, replace it with a
new one and try again.