Hi Moe2, Sorry your having issues, it can be confusing. It can be done from CUCM, several ways.   1) Force an image on a phone, but disables ability to change it again (kinda) - No thumbnail needed. Create the image correctly for an 8800 series phone.  Image should be 800x480x24.png. Login into CUCM OS Admin and Upload png to the correct folder on TFTP for 8800 which is  Desktops/800x480x24. Login to CUCM Serviceability, and restart the TFTP service. Login to CUCM Administration, create a new Common Phone Profile - turn OFF the Check box for Enable End User Access to Phone Background Image Setting.   Save Example: CPP_Lock_Wallpaper a) hardcode the full png filename into the new Common Phone Profile in the Background Image Field, click chkbox for this field.    or b) Save CPP with just the checkbox disabled. Edit Phone in Device, change phone to new CPP above.    Here's what you missing, go into CUCM, and Bulk Automate the CPP change using the phones Query Option.  Pick your phones, change the CPP with Option A above, and joila.   if Option a) Apply, and phone should now have wallpaper set in background field.   if Option b) add the png file you require for that specific phone, apply, and phone should now have that wallpaper set. Option c) once the wallpaper is set, you can then change the CPP back to previous setting, allowing the user to edit again, however the hard coded image remains till changed, even on reboots.   2) Add wallpaper to the List.xml file, allowing the users the option to choose their wallpaper from the list. - Requires thumbnail. Same steps as above, but upload both the image and another Thumbnail image.  Example:  logo.png   and   logo_tn.png Thumbnail for 8800 series should be 139x109x24 and uploaded to the same Desktops Folder on TFTP. Hint: Download existing List.xml, and edit. http://CUCM_IP_ADDR:6970/800x480x24/List.xml Create a custom List.xml file, and upload the new one to the same Desktops Folder above with your logo.png added. Example: <ImageItem Image="TFTP:Desktops/800x480x24/logo.png" URL="TFTP:Desktops/800x480x24/logo_tn.png"/> Reset TFTP service. Go into Wallpaper settings on phone, and select new Thumbnail.   I have an excel macro to help generate List.xml, if needed, msg me. Hope this helps, Joe CUCM, Gotta Love It ! ... View more

BTW, I just received a set of brand new 5525-X for cluster which ironically were already on 9.1.1 Interim. Seeing how this was the first Interim release it should have let me upgrade to 9.1.3, but no luck. In trying to just go to 9.1.2, same issue, regardless of ASDM (http error) or CLI (No Cfg structure found in downloaded image file), and I tried for hours, reload after reload.  register was fine at 0x1. So I started thinking that when someone upgrades to 9.1.1 (first interim) it changes something, then allow new versions. So I downloaded 9.0.3, and it finally allowed me to TFTP the 9.0.3 version which finally saved to flash. I could then boot system disk0:/asa903-smp-k8.bin and reload. Once on 9.0.3 it now allows me to upload 9.1.1, 9.1.2, and 9.1.3 which are finally saved to flash without error: No Cfg structure found in downloaded image file Now that they are on the flash, I can easily boot system to any version. ... View more