Technical Service Bulletin (TSB)
R1H Radio T27.38 USB Software Update
REFERENCE:

TSB: 08-271-25
GROUP: 08 - Electrical

Date:

August 20, 2025

VEHICLES
AFFECTED:

2023 (WL) Jeep Grand Cherokee / Grand Cherokee L
This bulletin applies to vehicles built on or after October 09, 2020
(MDH 1009XX) and on or before September 30, 2024 (MDH 0930XX)
equipped with Uconnect 5 Nav w 10.1" Display (CHN) (Sales Code
UQN).

REVISION: –

MARKET APPLICABILITY:
NA

MEA

SA

IAP

EE

CH

NOTE: This bulletin applies to
the China market.
CUSTOMER
SYMPTOM:

The following software enhancements are available:
● Virtual wall radio setting is back.
● Fix for difficulty playing music through QQ Music.
● Corrected installation error reported in the past for Macintosh App.
● Improvement in navigation.

CAUSE:

Software improvements

REPAIR SUMMARY:
This bulletin involves updating the R1H radio software level to T27.38.
CLAIMS DATA:

Labor Operation No:
18-60-F2-CF

18-60-F2-CE

Failure Code

Labor Description
Radio, Software - Create
USB Jump Drive from
Uconnect Website (One
Time Only)
(0 - Introduction)
Radio and Display
Module if needed Perform Software Update
(0 - Introduction)
CC

Skill Category
6 - Electrical and Body
Systems

Labor Time
0.4 Hrs.

6 - Electrical and Body
Systems

0.5 Hrs.

Customer Concern

The dealer must use failure code CC with this Technical Service Bulletin.
● If the customer’s concern matches the SYMPTOM identified in the Technical Service Bulletin, failure code
CC is to be used.
● When utilizing this failure code, the 3C’s (customer’s concern, cause and correction) must be provided for
processing Technical Service Bulletin flash/reprogramming conditions.

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DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in DealerCONNECT/
Service Library, verify all related systems are functioning as designed. If Diagnostic Trouble Codes (DTCs) or
symptom conditions, other than the ones listed above are present, record the issues on the repair order and
repair as necessary before proceeding further with this bulletin.
If the customer describes any of the symptoms listed above in the customer symptom section, perform the
Repair Procedure.
SPECIAL TOOLS/EQUIPMENT:

Description
wiTECH or Equivalent

Ref. No.
–

Notes
–

REPAIR PROCEDURE:
NOTE: Check and update display module software if needed before performing radio update.
NOTE: A USB flash drive of at least 30 GB of space is required for this update. It is also recommended
to use a quality, name brand (Kingston®) flash drive over a generic USB flash drive.
1. Check if the radio software has been updated. Go to “Vehicle Settings” then select "System
Information”and look for “Radio Version”.
2. Was the radio software at or above T27.38?
● YES >>> This bulletin does not apply.
● NO >>> Proceed to Step 3.
3. Has a 30 GB USB flash drive been created?
● YES>>> Proceed to Step 12.
● NO>>> Proceed to Step 4.
4. Go to DealerCONNECT>Service>Uconnect Command Center>Uconnect>More Information >Dealer
software downloads to download the files.
5. If a security message appears “Do you want to view only the web page content that was delivered
securely?” Fig. 1. Press “No” to continue.

Fig. 1
Pop-Up Security Message
NOTE: If the software cannot be downloaded, make sure you have proper security access. If not,
have the Service Manager or Shop Foreman download the software update.
6. Use a blank USB flash drive with at least 30 GB of space. Follow the on-screen instructions to download
the software files.

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Z08 FSAR-TSB-4932

NOTE: When downloading the software file, always select the MAC version, regardless of the
computer being used.
7. Download the software update file to your local PC's desktop. Make sure to select the “MAC” radial button
for all downloads Fig. 2

Fig. 2
MAC Radial Button
8. Download the radio software from DealerConnect to a blank USB flash drive. The USB flash drive should
be at least 30 GB and formatted to NTFS.
9. There should only be one file on the USB root directory labeled as a “.zip” folder.
10. Do not unzip the folder/file and move all contents to the root directory of the USB.
11. Once the USB flash drive have been created, it is recommended to label the USB flash drive with the
bulletin number and proper radio Sales Codes.
12. Start the vehicle and insert the correct USB flash drive with new software into the USB port.
CAUTION!
Make sure no other device is plugged into any of the USB ports while performing this software
update. If other devices are connected to USB ports during this procedure, it may cause a failure of
files to be loaded which can cause the radio to need replacement.
13. Once the system has verified there is an available update, press the “Update Now” button. Make sure the
vehicle is in park. Do NOT turn the ignition off until the two minute timer has expired. The ignition
doesn't have to be turned off to update the radio's software Fig 3.

Fig. 3
Software Update

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14. Press the “Continue” on the display screen Fig 4.

Fig. 4
Software Updating
15. The radio will reboot and the software update will begin. The software update should only take 30 minutes
Fig 5.
NOTE: DO NOT turn off the vehicle when the software update is completed and told to remove the
USB flash drive.

Fig. 5
Update Successful
NOTE: Flash time will take 45 minutes to 1 hour.
NOTE: Vehicle should be running the entire time.
16. DO NOT turn off the ignition at this point. The software update is still in process. Wait until the radio
restarts and the home screen is displayed. This should take around five minutes.
17. If the radio displays an error pop up “ SWITCH-INVALID_BINARY“ after successful radio update, ignore
this error message and press “OK” to continue Fig 6.

Fig. 6
Update Failed

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Z08 FSAR-TSB-4932

18. Press “OK” to continue Fig 7.

Fig. 7
Completed Update
19. Check if the radio software level has been updated. Go to “Vehicle Settings” then select “System
Information” and look for “Radio Version”.
20. Was the radio updated to T27.38?
● YES >>> Proceed to Step 21.
● NO >>> Perform the software update one more time. Proceed to Step 12.
21. Select and run "Perform Factory Reset". This can be found in the radio menu under Vehicle Settings >
Reset > Perform Factory Reset.
22. Once the factory reset is completed, turn off the ignition, open and closed the drivers door and then let all
modules go to sleep. Make sure the scan tool is NOT connected to the vehicle.
23. After all the modules have been in sleep mode for five minutes, turn the ignition back on.
24. Before clearing all DTCs, cycle the ignition OFF and back to RUN quickly (within two seconds).
25. Using the wiTECH, clear all DTCs that may have been set in any module due to reprogramming.
POLICY:
Reimbursable within the provisions of the warranty.
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC.