Polish support was kind enough to reply and help with it:
Details (Ver.2.09→Ver.2.11)
1) Modification of remote monitoring service control
Support root certificate update of remote monitoring service.
2) Correction of network setting related failure
Under the wired LAN environment where Printer Host Name is set to DNS server via DHCP server, correct the failure that disables setting Printer Host Name which has been set to the printer to the DNS server.
3) Correction of PDF file printing related failure
Correct the failure that causes black printing in a part of an image when printing PDF file from USB flash drive.
4) Correction of the failure that occurs when turning off the PC when connecting with USB cable
Correct the failure that infrequently causes printer hang-up when turning off the PC first
when connecting with USB cable.
5) Modification of communication related failure
Correct the failure that infrequently fails to collect printer information from driver.
6) Correction of the failure related to nozzle check print
Correct the failure that indicates “1” in the nozzle check print, [NINK], in spite of not disabling remaining ink detection.
7) Correction of the failure that causes EC16-2022 error or EC17-2024 error when feeding heavy weight paper
Correct the failure that infrequently detects EC16-2022 error (Upper roll drive overload error) or EC17-2024 error (Lower roll drive overload error) inappropriately when feeding heavy weight paper.
Correction of IEEE802.1X authentication related failure
Correct the authentication failure when setting the maximum number of characters to the authenticated server name.
9) Improvement of failure that disables carriage movement when printing large printing data
Improve the phenomenon that infrequently disables carriage movement when printing large printing data such as the printing data separated by color generated in RIP software.
10) Correction of IPP printing related failure
Correct the failure that infrequently disables receiving of print job generated in IPP printing.
11) Correction of the parts counter MS1 management related failure
Correct reset failure of the parts counter MS1.
12) Correction of manual registration adjustment related failure in service mode
Correct the failure that the patch number is printed in the wrong position when manual registration adjustment pattern is printed on A4 cut sheet in service mode.
