M3900 Flash Download Page 261 of 504Telephones and Consoles Description, Installation, and OperationDetermining software, M3900 PSWV, or firmware versionsX11 software versionsUse the ISS command in LD 22 to identify X11 software versions. Whentrying to determine whether a system’s software has been upgraded to theReissue of 25.08 or 25.15, patches MPLR13167 and MPLR13247 must beloaded and the LD 22 ISS command must be issued. If “PSWV Version 32”04.00 Yes Phase I,Phase IIFollow the standard software orderprocess.Phase III Note: This is not a standard process.There should not be M3900 Phase IIIphones configured on a Release 25.30system.1. Follow the Large System Release25.30 to 04.00 procedure for Phase I/IItelephones (above).The Release 04.00 contains M3900Phase III firmware for M3900 telephones.25.40,25.40B03.00 Yes Phase I,Phase II,Phase IIIFollow the standard software orderprocess.04.00 Yes Phase I,Phase II,Phase IIIFollow the standard software orderprocess.03.00 04.00 Yes Phase I,Phase II,Phase IIIFollow the standard software orderprocess.Table 38Flash Download procedure matrix for Large Systems (Part 15 of 15)PresentsoftwareUpgradetosoftwareKeycoderequiredM3900telephones Upgrade steps