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Appendix A: Flash Download procedure Page 115 of 174
M3900 Series Meridian Digital Telephones Description, Installation and Administration
Release 2
Note: This is not a standard process.
M3900 Release 2 phones should not
be configured on a Release 24.2x
system.
1. Follow the small system Release
24.2x to Release 25.08 Reissue
procedure for Release 1
telephones (above).
The Release 25.08 Reissue
contains M3900 Release 1
firmware. Follow the Flash
Download process to downgrade
the M3900 Release 2 phones to
Release 1 firmware
25.15
Re-issue
Yes Release 1;
Release 2
Follow the standard software order
process.
25.08 25.08
Re-issue
No Release 1 1. Download software from the
web.
2. Follow “PSDL Installation
Procedure” on page 142.
3. Install manufactured patches
4. Download firmware to sets,
following the Flash Download
procedure.
Table 15
Flash Download procedure matrix for small systems (Part 2 of 5)
Present
software
Upgrade to
software
Keycode
required
M3900
telephones
Upgrade steps