Update-Problems - FIrwall Says it is up to date but it is not

Hello,

I have some Firewalls they won't update.

A XGS 126 is on "SFOS 18.5.0 GA-Build264" - it says the Firmware is the newest. but is it not. We are on "SFOS 18.5.2 MR-2-Build380"

MY other XGS2100 and 1XGS116 and 3XGS are on "SFOS 18.5.1 MR-1-Build326" but they won't update to "SFOS 18.5.2 MR-2-Build380"

I tested an other XGS126 and updatet it manually to SFOS 18.5.2 MR-2-Build380.

So There is something wrong.

Here is the Log (serial deleted) from the u2d.log

You can see there the Firewall is getting an answere from the u2d servers which says "Yeah you have the newest firmware"

DEBUG Dec 10 13:31:08 [819]: Response length : 11
DEBUG Dec 10 13:34:31 [2561]: --serial = ####################
DEBUG Dec 10 13:34:31 [2561]: --deviceid = #####################
DEBUG Dec 10 13:34:31 [2561]: --fwversion = 18.5.0.264
DEBUG Dec 10 13:34:31 [2561]: --productcode = CN
DEBUG Dec 10 13:34:31 [2561]: --model = XGS126
DEBUG Dec 10 13:34:31 [2561]: --vendor = XN01
DEBUG Dec 10 13:34:31 [2561]: --oem = Sophos
DEBUG Dec 10 13:34:31 [2561]: --central_mgmt = 1.0
DEBUG Dec 10 13:34:31 [2561]: --server = u2d.sophos.com
DEBUG Dec 10 13:34:31 [2561]: --port = 443
DEBUG Dec 10 13:34:31 [2561]: Added new server : Host - u2d.sophos.com, Port - 443
DEBUG Dec 10 13:34:31 [2561]: --u2d_proto = 1.50
DEBUG Dec 10 13:34:31 [2561]: Final query string is :
?&serialkey=###########################&deviceid=##########################&fwversion=18.5.0.264&productcode=CN&appmodel=XGS126&appvendor=XN01&useragent=SF&oem=Sophos&central_mgmt=1.0&u2d_proto=1.50
DEBUG Dec 10 13:34:31 [2561]: Response code : 200
DEBUG Dec 10 13:34:31 [2561]: Response body :
<Up2Date/>

Does anyone haven an idea?