DIVIMATH HDZero User Manual - Page 15

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7. Copy HDZGOGGLE_RX.bin and HDZGOGGLE_VA.bin to the SD card;

8. Insert SD card into goggle, power on the goggle, wait for 2 minutes, and there will be a long

beep;

9. (Optional) Pull out the SD card, and check SD card contents on the PC. The 2 files should be

removed if flash process is successful;

10. Power the goggle off and then on again.

Note. A bootable SD card has a hidden partition that Windows Explorer will not show. And it can't be

removed even SD card is formatted with Windows Explorer. It means the goggle will flash itself from the

bootable SD card unexpectedly and mess up goggle firmware if a bootable SD card is inserted when the

goggle is powered on.

Step (6) must be followed strictly to get rid of the hidden bootable partition. Otherwise, it will brick the

goggle when goggle is powered with this SD card inserted. If this happens, you will need to repeat the

emergency firmware update process described in this section.

FIG 6. Restore a SD Card