The following is required when installing a HD24-STG2 or HD24-STG3 kit into a 2024+ H-D

Please note. There is 2 update files HD2237M and HD4125M.

HD2237M is required if the bike is on version 2111D or earlier. After completing this update then move on to HD4125M.

The bike MUST be on a battery maintainer. The bike has a rest state that will start at 12.3V and lower. This will cause the updates to fail. The bikes voltage must be maintained above this threshold during the process

The USB stick used for updates must be a USB-C with 64G of space or higher. Adapters and lower stick space will cause the update to give errors. 


Do not put both update folders on 1 stick. Either have 2 sticks with each version or if needed preform the first update then format the stick before doing the second update. 

The format type must be ExFAT.

Update Files
https://www.dropbox.com/scl/fo/iqsw26wzzyks6cmwzqbt9/AJhdy3OFVpGVcMNt-3XQPmU?rlkey=3n4mw7qv1m24po7cr6lpqnhnw&e=1&st=yptq525a&dl=0

Download RF Connect:

Install and RF connect video
https://www.youtube.com/watch?v=X-INtFUorEo
 

Skyline OS USB Update Preparation

1.	Required software files will need to be downloaded for the Skyline™ OS. Refer to:Infotainment Support Resources page.
	1.1. USB-1: Transfer contents to an empty USB drive (only required if at version 2111D or earlier). Contents: folder INSTANA_240003254D and USB_check_MY26.bat file. See Figure 2. NOTE Double click USB_check_MY26.bat to verify package contents and USB formatting. Video 1	View interactive image Figure 2. USB-1 Contents
	1.2. USB-2: Transfer contents to an empty USB. Contents: folders INSTANA_260005057D, CAL_NA_260405002D, QTL_NA_240603086D, VR_NA_240200060D, AMP_NA_235010601P.srec, and USB_check_MY26.bat file. See Figure 3. NOTE Double click USB_check_MY26.bat to verify package contents and USB formatting. This process will take 3 to 5 minutes to complete. Video 1	View interactive image Figure 3. USB-2 Contents Video 1. USB_check_MY26.bat - USB Contents and Format Verification
2.	Prepare vehicle for software update:
	b. Confirm the battery is at full charge prior to starting the update process. 2.1. See Figure 4. Connect vehicle to a battery tender and leave connected.	View interactive image 1 Battery tender connectors Figure 4. Connect Battery Tender
	2.3. See Figure 5. Reserve 45 minutes for the complete update process without interruptions.	View interactive image Figure 5. Process Timing

Skyline OS Update Procedure

1.	Turn vehicle to ACCESSORY MODE. a. See Figure 6. Press and hold Trip Switch for 3 seconds.	View interactive image 1 Trip switch Figure 6. Trip Switch
2.	See Figure 7. Wait until the Infotainment Control Unit (IFCU) fully boots up and the Main Menu is visible.	View interactive image Figure 7. Main Menu
3.	See Figure 8. Check software version: a. Select: Settings (on IFCU) b. Navigate: System > System Info > Product Information c. If the version is 1467D, 2100D or 2111D, proceed to step 4. d. If the version is 2237D or higher, skip to step 10.	View interactive image 1 Product information Figure 8. Product Information
4.	See Figure 9. Insert USB 1 into the vehicle's USB cable.
	4.1. See vehicle's owner's manual for USB cable location.	View interactive image 1 USB-C Thumb drive 1 Figure 9. USB 1
5.	Wait for the system to recognize it. When prompted, select: a. See Figure 10. UPDATE to proceed. b. CANCEL to stop the process.
	5.3. See Figure 11. An Error will show if the current IFCU software is 2237D or higher. Skip to step 10.	View interactive image 1 Update 2 Cancel Figure 10. System Recognition View interactive image Figure 11. IFCU Software Error
6.	See Figure 12. After update completes, USB1 will need to be removed before the IFCU will reboot.	View interactive image Figure 12. Completed Software Update
7.	Remove USB1. See Figure 13.	View interactive image 1 USB-C Thumb drive 1 Figure 13. USB 1
8.	See Figure 14. The IFCU will reboot automatically once USB 1 has been removed. DO NOT USE THE HAND CONTROLS TO TURN BIKE OFF OR ATTEMPT TO TURN ON.	View interactive image Figure 14. DO NOT USE HAND CONTROLS
9.	See Figure 15. Wait for the IFCU to fully boots up and the main menu is visible.	View interactive image Figure 15. IFCU Main Menu Screen
10.	See Figure 16. Insert USB 2 into the vehicle's USBcable. NOTE See Figure 17. DO NOT REMOVE USB2 AT ANY TIME DURING THE UPDATE PROCESS. DO NOT USE THE HAND CONTROLS TO TURN THE BIKE OFF OR ATTEMPT TO TURN ON. a. See vehicle's owner's manual for USB cable location.	View interactive image 2 USB-C Thumb drive 2 Figure 16. USB 2 View interactive image Figure 17. DO NOT USE THE HAND CONTROLS
11.	See Figure 18.Wait for the system to recognize it. When prompted, select: a. UPDATE to proceed. b. CANCEL to stop the process. c. The IFCU will perform five updates. Confirm each update to continue. d. The IFCU will reboot after each update.	View interactive image Figure 18. Perform Five Updates
12.	See Figure 19. After the last update has been completed, a pop-up message will say: Updates Completed. a. This message will only display for 10 seconds and then will self-clear.	View interactive image Figure 19. Pop-Up Message
13.	See Figure 20. Remove USB 2.	View interactive image 2 USB-C Thumb drive 2 Figure 20. USB 2

COMPLETE

NOTE

Warning ICONS are expected and will clear upon restarting the bike.

1.	See Figure 21.Turn the vehicle OFF manually. a. To clear any warning ICONS. Leave the vehicle off for 60 seconds before turning ON again.	View interactive image 1 Warning icons Figure 21. Warning Icons Displayed
2.	All software Updates have been completed. Verify through IFCU: a. Skyline OS b. Navigate: Settings > System > System info > Product information c. Amplifier d. Navigate: Settings > Sound > Speaker Setup > Device Status > Info e. Verify audio is heard.