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Aastra - MiVoice Office 400 and MiVoice MX-One / Downgrade Mitel 622 / 612 for older systems / SW
« on: February 13, 2019, 03:09:25 AM »
i saw a lot of posts on how to downgrade an 600 DECT phone. so i thought i do a little guide.
1: prex "esc" 2 times
2: prex the >>> key
3: type: ""***76# "
4: in the menu that appears go to "Download settings"
5: in the next menu gå to the bottom and you see "Switch to... 133.033.031" select and press ok.
Note: This software version is flawed, when starting the phone you must hold the on/off key longer than normal, wait until the phone is completely started until you release the key.
i have tested this version on old 300 system and also on even older ascotel systems. and on older SW versions of the 400 family.
1: prex "esc" 2 times
2: prex the >>> key
3: type: ""***76# "
4: in the menu that appears go to "Download settings"
5: in the next menu gå to the bottom and you see "Switch to... 133.033.031" select and press ok.
Note: This software version is flawed, when starting the phone you must hold the on/off key longer than normal, wait until the phone is completely started until you release the key.
i have tested this version on old 300 system and also on even older ascotel systems. and on older SW versions of the 400 family.