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Old version firmware for KX-TGP500B04/KX-TGP550T04

Model No. Firmware Size(KB) Date Version Remarks
KX-TGP500B04
KX-TGP550T04
3,632 July 29, 2013 12.81
3,617 Dec 28, 2012 12.73
3,554 Jun 15, 2012 12.58
3,537 Apr 25, 2012 12.53
2,915 Jan 10, 2012 12.35
2,758 Jul 29, 2011 12.17
2,739 Apr 12, 2011 12.12

Note : Do not perform a firmware downgrade. If TGP500/550 will be downgraded ,it will not work.

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