User Manual

Before upgrading the firmware to the latest version (v1.22.02)
Check the current firmware version of your device first.
Follow the below instructions step by step. Otherwise firmware upgrade would
fail and the device may be permanently damaged.
If the current firmware version is v1.19.10 or below:
1.
Upgrade the device to v1.20.00 through USB first:
i)
Use the zip file v1.20.00 and unzip it in USB. Do not rename the folder. Follow
the upgrade procedure mentioned in later pages.
ii)
Double check that firmware version is now v1.20.00 .
2.
After upgrading to v1.20.00, upgrade the set to v1.22.02 through USB:
i)
Use the zip file v1.22.02 and unzip it in USB. Do not rename the folder. Follow
the upgrade procedure mentioned in later pages.
ii)
Double check that firmware version is now v1.22.02 .
If the current firmware version is later than v1.19.10:
1.
Upgrade the set to v1.22.02 through USB.
i)
Use the zip file v1.22.02 and unzip it in USB. Do not rename the folder. Follow
the upgrade procedure mentioned in later pages.
ii)
Double check that firmware version is now v1.22.02
IMPORTANT NOTE for HTB4150B/12, /51, /98

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