Firmware 7.5.3 have provisioning bug?

[boss-chifra]

I have a few 502G units and they are provisioned using .cfg files located on a tftp server. After update firmware to 7.5.3

I noticed frequent rebooting the phone. In logs a see

Reboot History
Reboot Reason 1:	Provisioning(11/17/2012 20:54:43)	Reboot Reason 2:	Provisioning(11/17/2012 20:51:41)
Reboot Reason 3:	Provisioning(11/17/2012 20:48:36)	Reboot Reason 4:	Provisioning(11/17/2012 20:45:33)
Reboot Reason 5:	Provisioning(11/17/2012 20:42:29)

My .cgf file have

<Default_Character_Encoding ua="na">UTF-8</Default_Character_Encoding>

but in http interface on phone I see

Default Character Encoding: ISO-8859-1

Now I understand the reason for frequent reboots, the configuration of the phone, and the  .cfg file non-matching.

On firmware 7.5.2b such problem was not.

[arcanosintercom]

Do you have a BMP picture loaded in the screen?

If so, it could be our problem... https://supportforums.cisco.com/message/3786793#3786793

Let me know, because I'm going crazy about this!

Regards

Alberto

[boss-chifra]

I have another problem, I have not random reboot, i have reboot only time out provisioning.

I can not set Default_Character_Encoding UTF-8, or GUI(http) or through provisioning.

Sorry for my bad English