BenQ VM2221 Product Service Manual page 56

Step4: Turn off TV with RC or Power key after EEPROM erase.
Step5: Turn on TV and the FW update procedure completely
Add.: enter factory model Input，6，2，5，8，0 with remote controller.
Note: please do not adjust any other functions in factory model, in case of any
problem irreparable! If any problem caused by adjust factory model,
manufactory do not take any responsibility for that, thanks!
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