Create DISABLE_FW_UPGRADE.md

SD_ROOT/wz_mini/web/cgi-bin/DISABLE_FW_UPGRADE.md

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+If a remote or app update is initiated, the camera will reboot due to the failure of the update. The firmware update should not proceed again for some time, or at all.
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+When a firmware update is initiated, due to a bootloader issue (bug?), we intercept the update process and flash it manually. This should now result in a successful update, if it doesn't, please restore the unit's firmware manually using demo_wcv3.bin on the micro sd card.
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