DM42 Info

Purchase Information

Date	Serial No.	DM42 Version	Free42 Version	DMCP Version	Firmware Files
24/5/22	06434	3.21	3.0.9	3.22	dmcp_flash_3.23_dm42-3.21.zip
15/4/23	06434	3.22	3.0.15	3.24	dm42_3.24.zip
27/07/24	06434	3.23	3.1.8	3.25	dmcp_flash_3.25_dm42-3.23.zip
11/02/26	0644	3.26	3.3.10	3.29	dmcp_flash_3.29_dm42-3.26.zip

DM42 restoration : dm42_pgm_qspi.zip
- DM42 pgm only (no QSPI) : dm42-3.23.zip
Generally I find C47 to be sluggish and laggy and although the features are great the User Experience is poor.
- The Dev. Team seem to spend more time adding new features/functions and don't really care that it's very slow
- Reports indicate that the DM42n runs C47 much faster

Date	Serial No.	Firmware	Version	DMCP Version	Firmware Files
21/09/24	06434	C47	0.109.02.05	3.25	C47 Release : 1 August 2024
18/02/25	06434	C47	0.109.02.07b4	3.25	C47 Release : 2 Jan 2025

Put a text file /rtccalib.cfg in root directory of FAT drive with contents:

-41.26

Start	Stop	Accumulated Error (s)	Rate Error (s/d)	Comments
28/3/22	7/11/22	-5.8	0.0	-5.8s over period 224 days = -0.03s/d

Date Start	Date Check	Delta	Latest Rate Error	Average Rate Error	Comments
26/01/26		-43.0			Start Period. Correction -39.1ppm
26/01/26	27/01/26	-43.2	-0.3	-0.3	After 24 hours