# Instructions for upgrading from 1.2 to 1.4?

**URL:** <https://community.asterisk.org/t/instructions-for-upgrading-from-1-2-to-1-4/16220>\
**Category:** Asterisk Support\
**Created:** [August 16, 2007, 11:50pm UTC](https://community.asterisk.org/t/instructions-for-upgrading-from-1-2-to-1-4/16220 "2007-08-16T23:50:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sbussinger](https://sea1.discourse-cdn.com/asterisk/user_avatar/community.asterisk.org/sbussinger/32/1034_2.png) [@sbussinger](https://community.asterisk.org/u/sbussinger)\
**Post date:** [August 16, 2007, 11:50pm UTC](https://community.asterisk.org/t/instructions-for-upgrading-from-1-2-to-1-4/16220/1 "2007-08-16T23:50:26Z")

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I’m running a really old version (Asterisk 1.2.5) and I’d like to upgrade to a current version and thought I’d upgrade to the 1.4 branch while I’m at it.

I can’t seem to find any documentation on what changed from 1.2 to 1.4 and what needs to be addressed during the upgrade (e.g. changes to dialplan, etc).

Could someone point me to a documentation page or two that I missed?

Thanks!

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**Author:** ![sbussinger](https://sea1.discourse-cdn.com/asterisk/user_avatar/community.asterisk.org/sbussinger/32/1034_2.png) [@sbussinger](https://community.asterisk.org/u/sbussinger)\
**Post date:** [August 20, 2007, 3:39pm UTC](https://community.asterisk.org/t/instructions-for-upgrading-from-1-2-to-1-4/16220/2 "2007-08-20T15:39:05Z")

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**Author:** ![mylo78](https://avatars.discourse-cdn.com/v4/letter/m/8c91f0/32.png) [@mylo78](https://community.asterisk.org/u/mylo78)\
**Post date:** [August 22, 2007, 3:21am UTC](https://community.asterisk.org/t/instructions-for-upgrading-from-1-2-to-1-4/16220/3 "2007-08-22T03:21:56Z")

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Download the 1.4 src, in the docs directory there is a file called UPGRADE.txt  
It tells you what changed.

Why break a system that is working? Do it on another box or a VM.