SIP Phone

Download (USA)

Model No.	Firmware	Size(KB)	Date	Version	Remarks
KX-TGP500B04 KX-TGP550T04	TGP5xx-USA-12.58_HW1.fw	3,554	Jun 15, 2012	12.58	Release Note
	TGP5xx-USA-12.53_HW1.fw	3,537	Apr 25, 2012	12.53
	TGP5xx-USA-12.35_HW1.fw	2,915	Jan 10, 2012	12.35
	TGP5xx-USA-12.17_HW1.fw	2,758	Jul 29, 2011	12.17
	TGP5xx-USA-12.12_HW1.fw	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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