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Have a look this video....
If your box does not contain min flash button then follow this link
P.s: Your box is DM800se, So you can not use null modem cable...
Should be use both cable to gather (min usb + Lan) cables
If your box does not contain min flash button then follow this link
P.s: Your box is DM800se, So you can not use null modem cable...
Should be use both cable to gather (min usb + Lan) cables