actually in burn mode none of the buttons will work .Thanks for your answer though.https://factory-reset.com/wiki/Haier_Service_Menu
Hello
Looks as though you entered the Service Menu ,try one of the methods in the above link to get back in to it and navigate to the burn mode .If you have a code all ready much better to use that one .
Good Luck
but can you help me find weather firmware update will do the job or not . and where can I find the firmware?and
actually in burn mode none of the buttons will work .Thanks for your answer though.