
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.