Product specifications

CDM-710 Broadcast Satellite Modem Revision 11
Flash Upgrading MN/CDM710.IOM
4–2
4.2 CDM-710 Broadcast Satellite Modem Flash Upgrade Restrictions
IMPORT ANT
The upgrade to FW12437x Firmware Ver. 4.0.x from an earlier version is a one
way upgrade path. Once an upgrade to 4.0.1 (or higher) is completed, it is no
longer possible to revert to earlier versions – if reflash to an earlier version is
attempted the modem will detect and disallow it as a protective measure.
The one-way upgrade effect is necessary because reallocation of internal memory for additional
space has resulted in an incompatibility between releases beginning with Firmware Ver. 4.0.1 and
all earlier versions.
Note the following:
• Use the flash upgrading steps provided on this page when either:
o Upgrading to Firmware Ver. 4.1.1 or later from a firmware version prior to Ver.
4.0.1, first upgrade to Ver. 4.0.1 in both images prior to upgrading to Ver. 4.1.1,
–or–
o Upgrading to/from Firmware Ver. 4.1.1 or later from an earlier version.
Upgrading to Firmware Ver. 4.1.1 from a previous version
Step Procedure
1
Start with pre-FW Ver. 4.1.1 in both images.
2
Upgrade one image.
3
Switch images.
4
Reboot the modem.
5
Upgrade the opposite image.
6
Reboot the modem.
7
Switch images.
8
Reboot the modem once more.
Downgrading from Firmware Ver. 4.1.1 to a previous version
Step Procedure
1
Must start with FW Ver. 4.1.1 or later in both images.
2
Program the lower version of firmware into one of the images.
3
PRIOR TO REBOOTING, switch to the other image.
4
Reboot the modem.
5
Program the lower version into the opposite image.
NOTE
If the modem is rebooted without switching images per Step 3, simply put
both images back to the higher version and start over.
• Upgrading from Firmware Ver. 4.1.1 to 4.1.2 uses the Bulk Firmware Upgrade procedure
outlined in the next chapter section.