Technical Service Bulletin (TSB)
Radio USB Update to U40.20
REFERENCE:

TSB: 08-302-25
GROUP: 08 - Electrical

Date:

September 12, 2025 REVISION: -

VEHICLES
AFFECTED:

2023 (W7) Jeep Grand Cherokee (INDIA)
2021 - 2023 (WL) Grand Cherokee / Grand Cherokee L (Australia)
This bulletin applies to vehicles built equipped with one of the
following radios:
● Uconnect 5 Nav w 8.4" Display (Sales Code UPL).
● Uconnect 5 Nav w 10.1" Display (Sales Code UPN).
● Uconnect 5 Nav W 8.4" Display (Sales Code UUL).
● Uconnect 5 Nav w 10.1" Display (Sales Code UUN).

MARKET APPLICABILITY:
NA

MEA

SA

IAP

EE

CH

NOTE: This bulletin applies to
the India & Asia Pacific
market.

CUSTOMER
SYMPTOM:

Customers may experience one or more of the following:
● Temperature displayed in the radio display screen and rear HVAC are mismatched.
● Auto door locks are inoperable.

CAUSE:

Software improvements

REPAIR SUMMARY:
This bulletin involves inspecting and if required, updating the radio software level to U40.20. Depending on the
radio’s current software level the radio may need a one or two USB update.
CLAIMS DATA:

Labor Operation No:
18-60-F2-CI

18-60-F2-CJ

18-60-F2-CK

Labor Description
Radio, Software - Create
USB Jump Drive from
Uconnect Website UPL or
UPN Radio w/ U40.20
(One Time Only)
(0 - Introduction)
Radio, Software - Create
USB Jump Drive from
Uconnect Website UUL or
UUN Radio w/ U40.20
(One Time Only)
(0 - Introduction)
Radio, Software - Create
USB Jump Drive from
Uconnect Website UUL or
UUN Radio w/ U29.42
(One Time Only)
(0 - Introduction)

Skill Category
6 - Electrical and Body
Systems

Labor Time
0.3 Hrs.

6 - Electrical and Body
Systems

0.3 Hrs.

6 - Electrical and Body
Systems

0.3 Hrs.

Z08 FSAR-TSB-6144
Labor Operation No:
18-60-F2-CL

18-60-F2-CM

18-60-F2-CN

18-60-F2-CO

18-60-F2-CP

Failure Code

-2Labor Description
Radio, Software - Create
USB Jump Drive from
Uconnect Website UPL or
UPN Radio w/ U29.42
(One Time Only)
(0 - Introduction)
Radio, Check Software
Level and Perform
Software Update UUL or
UUN radio w/ U40.20
(One Update)
(0 - Introduction)
Radio, Check Software
Level and Perform
Software Update UPL or
UPN radio w/ U40.20
(One Update)
(0 - Introduction)
Radio, Check Software
Level and Perform
Software Update UUL or
UUN radio w/ U29.42
(Two Updates)
(0 - Introduction)
Radio, Check Software
Level and Perform
Software Update UPL or
UPN radio w/ U29.42
(Two Updates)
(0 - Introduction)
CC

Skill Category
6 - Electrical and Body
Systems

Labor Time
0.3 Hrs.

6 - Electrical and Body
Systems

0.7 Hrs.

6 - Electrical and Body
Systems

0.7 Hrs.

6 - Electrical and Body
Systems

0.9 Hrs.

6 - Electrical and Body
Systems

0.9 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.
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.

-3-

Z08 FSAR-TSB-6144

SPECIAL TOOLS/EQUIPMENT:

Description
wiTECH or Equivalent

Ref. No.
–

Notes
–

REPAIR PROCEDURE:
NOTE: ● A 8GB USB flash drive formatted as NTFS is required for U40.20.
● A 32GB USB flash drive formatted as NTFS is required for U29.42.
It is also recommended to use a quality, name brand (Kingston®) flash drive over a generic
USB flash drive.
1. Check radio software version. Go to “Vehicle Settings” then select "System Information” and look for
“Radio Version”.
2. What is the radio software level (Application Version) at?
● U40.20 or higher >>> The radio software is already up to date. Normal diagnostics should be
performed.
● At or above U29.42 and under U40.20 >>> The radio will only need one USB flash drive to update the
radio. Create a USB flash drive with U40.20 software. Proceed to Step 3.
● Below U29.42 >>> The radio will need two USB flash drives to update the radio. Create two USB flash
drives with U29.42 and U40.20 software. Update to U29.42 first and then U40.20. Proceed to Step 3.
3. Have one or two USB flash drives been created?
● YES>>> Proceed to Step 12.
● NO>>> Proceed to Step 4.
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.
4. Go to DealerCONNECT>Service>Uconnect Command Center>Uconnect>More Information >Dealer
software downloads to download the files.
5. Use a blank USB flash drive with at least 8GB of space and formatted to NTFS for the U40.20 update. Use
a blank USB flash drive with at least 32GB of space and formatted to NTFS for the U29.42 update. Follow
the on-screen instructions to download the software files.
NOTE: When downloading the software file from the Uconnect site, always select the MAC version,
regardless of the computer being used.

Z08 FSAR-TSB-6144

-4-

6. Download the software update file to your local PC's desktop. Make sure to select the “MAC” radial button
for all downloads Fig. 1.

Fig. 1
MAC Download Steps
7. Perform the following steps to format the USB flash drive.
a. Select "NTFS"” format.
b. Select “Default allocation size” under Allocation Unit Size.
c. Select “Quick Format” under Format Options.
d. Click “Start”.
8. Be sure to download the file to your designated folder before transferring the zip file to the blank USB flash
drive.
NOTE: A blank USB flash drive will be needed for each radio update, additional updates cannot be
on the same USB flash drive.
9. Download the radio SW from the desktop to a blank USB flash drive. Use a blank USB flash drive with at
least 8GB or 32GB of space and formatted to or NTFS. Follow the on-screen instructions to download the
software files.
10. Do not unzip the folder/file and move all contents to the root directory of the USB.
11. There should only be one file on the USB root directory labeled as a zip folder.
NOTE: 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.
NOTE: Engine should be running the entire time the radio is flashed.
NOTE: The software update screen may take up to a minute before it is displayed. If the update
screen isn’t displayed, cycle the ignition to “Off” then “Run” .

-513. Press Update Now Fig. 2.

Fig. 2
Software Update Screen
14. Press Continue Fig. 3.

Fig. 3
Timer Screen
15. Wait for software update to complete 100% Fig. 4.

Fig. 4
Progress Screen

Z08 FSAR-TSB-6144

NOTE: System update process takes approximately five minutes. Wait until radio restarts and
Home screen is displayed Fig. 5.

Fig. 5
Software Update Complete
NOTE: ● Flash time will take ~30 minutes to one hour.
● Vehicle should be running the entire time.
● Sometimes the radio throws an error pop up "Switch-Invalid_Binary" after successful
radio update. Please ignore this error and click OK Fig. 6.

Fig. 6
Switch-Invalid_Binary Error
16. What was the radio software level after this update?
● If the software level is U29.42 the next phase of the radio update needs to be performed. Proceed to
Step 12.
● If the software level is U40.20 the radio download has been completed. Proceed to Step 17.
17. Go to Vehicle Setting - Reset - Perform Factory Reset. Once Factory Reset is completed, allow sleep cycle
for approximately five minutes.
18. Using wiTECH, clear all DTCs that may have been set in any module due to reprogramming.
19. After Factory Reset is completed, allow a sleep cycle for five minutes.
NOTE: Suggest to customer to repeat the wireless device pairing again after deleting the existing
pairing from the phone.
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.