Firmware Including Updates; Firmware Problems - HHB FlashMic DRM85 Service Manual

Firmware including updates

The FlashMic firmware is held in non-volatile memory and two copies are kept in
memory to ensure that operation is still possible even if the currently in use firmware
somehow becomes corrupt.

1. Firmware problems

Generally, most booting, freezing or locking up problems have been due to the earliest
release of firmware, v3.02.10, which could corrupt the flash memory file system if the
batteries were allowed to run flat in the mic. This bug was removed in an update to
v3.02.12 that was the subject of a technical bulletin back in August 2006; all
microphones should have been updated at that time. The current firmware is
v4.04.06, which contains a still more secure file system.
The firmware for the FlashMic may be updated from time to time and the latest version
will be available for download from the website:
www.flashmic.info
2. File corruption
FlashMic's with "corrupt" files systems (and, indeed, any FlashMic) should be
reformatted and then updated to v4.04.06. All data will be lost.
There are two operator recovery options (first fit fresh or fully charged batteries):
Try 'A' first
A. Hold down the REC and M buttons whilst powering on. The display will show DRM85
and go no further. Move the rocker switch up or down. If the display shows SAME,
them remove the batteries and start again, but move the rocker switch in the opposite
direction to before (i.e., turn switch up if the switch was turned down before). The
display should show UPDATE, with a progress bar. If successful, note, the firmware
version, and then perform a forced format, as described in 'B'
B. Forced reformat. Hold down REC, PLAY and M buttons whilst powering on. The
display should show DRM85, then the firmware version, then "FMT N" Use the rocker
control to select "FMT Y" and press in to select (all data will obviously be lost).
Assuming you manage to re-update in 'A' and successfully reformat, then update the
firmware to v4.04.06. Do the update twice (as stated above the Mic holds two copies
of the firmware; you are choosing between the two copies in 'A' above, so it's
important that both copies are updated).
DRM85 FlashMic Service Manual Version 0.91 Page 16 of 22