Appendix A
Common Issues 167
• If there is no WAV file attachment, the E-mail server or E-mail application
may have removed the attachment as part of virus filtering (adjust the E-
mail filters to allow WAV file attachments, or add the sending E-mail
address to the list of approved senders to prevent the E-mail application
from removing attachments).
How do I upgrade the Firmware on my DOS-A50?
The DOS-A50 firmware is only upgradable by service personnel. See the DOS-
A50 Service Manual for more information.
N
OTE: The DOS-A50 boots from USB as priority. When upgrading firmware
ensure that the USB key is removed before rebooting the DOS-A50. Fail-
ure to remove the USB key results in a reboot loop.
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