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What are you mean "on power up--no display" ?
Just as do this exactly...
remove sim>>>open optiflasher>>>click advanced>>>select com number>>>select Advanced 2>>>click do job>>>and them power on box....see what happen and take picture from optiflasher and uploade it here..
Just as do this exactly...
remove sim>>>open optiflasher>>>click advanced>>>select com number>>>select Advanced 2>>>click do job>>>and them power on box....see what happen and take picture from optiflasher and uploade it here..