personalized configuration settings protection not working

Hi,

Just tried on a bunch of T42G and T46G to setup the personalized settings protection but it's not working.

I added : "
auto_provision.custom.protect = 1
auto_provision.custom.sync= 1
"
to the provisioning file.

When the phones are booting they are trying to read the mac-local.cfg on the TFTP server and retry a few times but after that they never write the local settings to the TFTP.
I tried creating an empty dummy file but it doesn't help, it only prevent the retries

By pure luck it seemed to work on one of the phone while i did some tests but it stopped working after that without any reason.

I tested it with the 28.80.0.95 firmware on the T46Gs.

Any clue ?

Thanks in advance.