AppendixA: Flash Download procedure Page 119 of 174
M3900Series Meridian Digital Telephones Description,Installation and Administration
Table 1 6
Flash Download procedure matrix for large systems (Par t 1 of3 )
Present
software
Upgrade
to
software
Keycode
required
M3900
telephones Upgradesteps
24.25 25.08
Re-issue
Yes Release 1 1. CallNortel Network s technical support
tofind out how to receive an upgrade.
OnOption 51C CP2 systems, a
DRAMupgrade from 16 to 32
Megis required.
An upgrade from MAT 6.5 is
required.
2. Followthe PSDL Installation
Procedure(see “PSDL Installation
Procedure”on page 142).
4. Installthe manufactured patches.
5. Downloadthefirmwaretothe
telephones,following the Flash
Downloadprocedure.
Release 2 Note: Thisis not a standard process.There
shouldnot be M3900 Release 2 telephones on
aRelease 24.2x system .
1. Follow large system 24.2x to 25.08
Re-issue procedure for Release 1
telephones(above). The 25.08 Re-issue
containsM3900 Release 1 firmware.
Followingthe flash download process
downgradesthe M3900 Release 2
telephonesto Release 1 firmware.
25.15
Re-issue
Yes Release 1;
Release 2
Followthe standard Software order
process.