DS620 Firmware Revision History
Feature Functionality Improvements:

DS620 v1.10 release 2015-04
– Added support for 6x9 print media, and related printout sizes**. 

DS620 v1.21 release 2015-06
- Added Support for iSERIAL USB functionality*. 
- Implemented a counter measure for rare ribbon rewinding error.

DS620 v1.34 release 2016-04
- Added support for additional surface finish Luster Matte*.
- Implemented a counter measure for rare head position error.

DS620 v1.41 release 2016-11
- Added support for Continuous Panorama Printing**.
- Add partial matte function**.
- Implemented a countermeasure for rare unexpected reboot.

DS620 v1.52 release 2017-07
- Added support for additional overcoat surface finish Fine Matte*.
- 300dpi throughput improvement for Matte finish printing.
- Printing throughput improvement for Partial Matte print mode.
- Implemented a countermeasure for scrap cut misalignment for L-2 layout printing. **

DS620 v1.62 release 2020-08
- Improves ribbon panel detection for aging printers. Renews the sensor data during paper initialization.

DS620 v1.63 release March 29, 2021
- Some improvements

DS-620 v4.31 release 2022-10
- Provides backwards compatibility. Supports both new and old design printer mainboard chip sets. 
- Optimizes the printer initialization routine to minimize media consumption at print pack reloading.
- Maintains the compatibility of the previous vintage DS620 printers with newer generation DS620 printers.

Notes: 
* Some new features and print sizes require the complementary printer driver update to enable the function.  
** Print media pack sizes are limited to certain sales regions.