1. Connect the old version dm 900c (before 2010.06) and the new version dm 900c with a Rs232 cable.
2. turn on the old version,press the yellow button('MEUN') on the remote control,move right to the fourth menu('CONFIG'),then move down to the last sub-menu('System Upgrade'),and select 'Receive',press 'OK' on the remote.
3. turn on the new version,do the same as step 2,except select 'Transmit'.
4. plug the AV cable to the old version,when it shows 'DM-500CII' on the screen,means upgrade successfully.
Done!
http://www.cablehdtvs.com/
service@cablehdtvs.com
2. turn on the old version,press the yellow button('MEUN') on the remote control,move right to the fourth menu('CONFIG'),then move down to the last sub-menu('System Upgrade'),and select 'Receive',press 'OK' on the remote.
3. turn on the new version,do the same as step 2,except select 'Transmit'.
4. plug the AV cable to the old version,when it shows 'DM-500CII' on the screen,means upgrade successfully.
Done!
http://www.cablehdtvs.com/
service@cablehdtvs.com
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