Yealink T46U custom wallpaper

[Andrea Soc]

Hi
i want to set with provisioning file xml an custom image but i am frustrated to find the solution.
I use:
the last Yealink T4X template , version 132859
the la st firmware from 3cx
and change this lines:
phone_setting.backgrounds = Config:myimage.png (this image is correclty size and is stored in C:\ProgramData\3CX\Instance1\Data\Http\Interface\provisioning\XXXXXXXistancenumber\logo
and in this line
{IF ua=SIP-T46S,SIP-T48S,SIP-T53C,SIP-T54W,SIP-T57W,SIP-T46U,SIP-T48U,SIP-T33P,SIP-T33G}
wallpaper_upload.url = %%PROVLINKLOCAL%%/logo/myimage.png
and
{ELSE}
{IF ua=SIP-T46S,SIP-T48S,SIP-T53C,SIP-T54W,SIP-T57W,SIP-T46U,SIP-T48U,SIP-T33P,SIP-T33G}
wallpaper_upload.url = %%PROVLINKLOCAL%%/logo/myimage.png

in other yealink t46G all work fine. Can you help me figure out where I'm going wrong?
thanks

 

[Charles_3CX]

Here we recommend only using the built-in feature available with an enterprise subscription, found under the phone provisioning tab of the extensions settings, as custom templates can not be advised upon nor supported.

 

[Andrea Soc]

uhm ok.
I try to set , with my enterprise subsciption, on the phone provisioning the logo, but don't work..

 

[Charles_3CX]

Check the requirements for the logo, please.

Logo Properties: Format=.png, width=480, height=272, bitdepth=24.

Note: if the logo file is incompatible, you may break the phone.

You must also reprovision or reboot the device once the logo is uploaded.