CELTO D48 ARM 96K Firmware V1.4.44			
Compiled on 2025-08-11
File name: CELTO_D48_ARM_FMW_V1.4.44.sbin
Release type: Regular update
Development branch: Public

V1.1.44 Change log:
Changed: update security protocol to match software v3.1.52 new security features

V1.1.43 Change log:
Changed: Inputs are now labeled A/B/C/D instead of 1/2/3/4
Changed: Security rights to match v3.1.51 software release
Fixed: Security redondancy when multiple units are connected



Know bugs: 
N/A

How To update D48 ARM firmware:
1. Power oFF or Mute all amplifiers connected to the D48
2. Launch D48 Control
3. Power ON the D48 unit
4. Connect the software to the unit and enter the password (if any)
5. Now it's a good time to Backup all your settings and memories
6. Click [MENU] on the software top left corner and select [Update ARMP Firmware]
7. Follow the instructions. The operation takes a few seconds.
8. After updating the firmware, the D48 will reboot
9. Connect to D48 unit amd click [MENU] then select [Factory Reset]
10. A warning window will inform that all data will be lost. You can still cancel and  perform  your backup. If you choose to proceed, all LEDs on the unit will flash and the unit will reboot.
11. Close D48 Control software and launch it again. 

That's it !

Any question? send us an email to support@celtogroup.com

