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Page 230 of 504 M3900 Flash Download
553-3001-367 Standard 3.00 August 2005
Phase II,
Phase III
Note: This is not a standard
process. M3900 Phase II/III
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 Phase I
telephones (above).
The Release 25.08 Reissue
contains M3900 Phase I firmware
for M3902 and M3905 telephones
and Phase II firmware for M3903
and M3904 telephones. Follow the
Flash Download process to
downgrade the M3900 Phase II
phones to Phase II/III firmware.
Table 37
Flash Download procedure matrix for Small Systems (Part 2 of 18)
Present
software
Upgrade to
software
Keycode
required
M3900
telephones
Upgrade steps