sp540 service mode

[graphix]

ok tried to get into service mode but it said service mode is protected..what is the key to get into this mode now ..Thanks (it's out of warranty so it's time to play)

 

[34Ford]

Its all in the timing pressing the buttons. You cannot pause for a second.
Try again.

 

[CSOCSO]

try this
Press in this order - UP, LEFT, RIGHT DOWN, LEFT, DOWN, RIGHT

Then hold down the LEFT, DOWN, RIGHT keys and press the POWER simultaneously.