2021-2026 Stellantis Uconnect 5 Radio Software Update Errors

Owners of various 2021-2026 Stellantis vehicles equipped with the Harman R1H Uconnect 5 radio may encounter difficulties when attempting to perform a software update. The radio may fail to complete the update and display specific error codes. This technical service bulletin, S228A000025 Rev A, outlines these common error codes and provides detailed corrective actions to resolve the underlying issues. If you are experiencing Stellantis Uconnect 5 radio errors during an update, this information can help you understand the problem.

Symptoms and Error Codes

The primary symptom is the Uconnect 5 radio failing to complete a software update, often accompanied by a specific error code displayed on the screen. These codes indicate different types of failures during the update process, from corrupted files to connectivity issues or insufficient storage. The following table lists the HMI (Human Machine Interface) error codes and their corresponding descriptions:

HMI Error Code	Error Code Description
(-2)	Failed to parse the package / Corrupted package
(-3)	Package is not compatible / Integrity check failed
(-4)	Download Failure (FOTA)
(-5)	Generic error for all Installation Failures. (Update engine failures, Error in decryption, Error in finding private key, payload signature mismatch, file system verification failure etc...)
(-9)	USB disconnected in the middle of update
(-11)	Pre Condition failed for download or Installation (FOTA)
(-13)	Post Installation verification failed. Failed to activate the new SW
(-18)	Insufficient space to download the package. (FOTA)

Troubleshooting and Repair Steps

This bulletin, S228A000025 Rev A, provides specific actions for each error code to ensure a successful software update. The general approach involves verifying the software package integrity, ensuring proper download conditions, and checking vehicle pre-conditions.

For Package-Related Errors (Codes -2, -3, -5)

If you encounter error codes like "Failed to parse the package / Corrupted package" (-2), "Package is not compatible / Integrity check failed" (-3), or "Generic error for all Installation Failures" (-5), the issue typically lies with the software package itself or its transfer. Technicians should confirm the software (SW) is correctly packaged on the USB drive, with only one .zip folder in the root directory. The file should not be relabeled or contain spaces or parentheses in its filename. If these conditions are not met, the software should be downloaded again from the Uconnect Site. For generic installation failures (-5), it's also crucial to ensure the USB is formatted correctly and the filename precisely matches the released version, without any appended digits. A factory reset may also be necessary.

For Download and Connectivity Issues (Codes -4, -13)

Errors such as "Download Failure (FOTA)" (-4) or "Post Installation verification failed. Failed to activate the new SW" (-13) often point to problems with internet connectivity or the activation of the new software. In these cases, the vehicle's ignition should be cycled to the off position. Technicians must then confirm that Wi-Fi or Telematics Box Module (TBM) connectivity is available before retrying the software update or installation.

For USB and Pre-Condition Failures (Codes -9, -11)

If the update process is interrupted by a "USB disconnected in the middle of update" (-9) error, the USB drive should be removed. The vehicle should then be allowed to go to sleep before attempting the update again with the USB. For a "Pre Condition failed for download or Installation (FOTA)" (-11) error, the update should only be retried after confirming specific vehicle conditions are met: the ignition is off (in accessory mode), battery sensor accuracy is verified via CAN, and the battery charge status is at 65% or higher. Addressing these pre-conditions is vital to prevent further Stellantis Uconnect 5 radio errors.

For Insufficient Space (Code -18)

An "Insufficient space to download the package. (FOTA)" (-18) error indicates that the Uconnect system lacks the necessary memory for the update. To resolve this, technicians should check for multiple user profiles (more than two) and may need to delete extra profiles to free up memory space. Performing a factory reset can also help clear storage and facilitate the update.

What Owners Should Do

If your 2021-2026 Stellantis vehicle is experiencing Harman R1H Uconnect 5 radio software flash error codes, and you are unable to complete a software update, it is recommended to contact your authorized Stellantis dealership. They have access to the full technical service bulletin S228A000025 Rev A and the necessary tools and expertise to diagnose the specific error code and perform the required corrective actions to ensure your Uconnect 5 system is properly updated.

NHTSA ID: 11029705