Hi, How can I do a firmware update or flash on the CCM module on a Range Rover Sport L494 2014 using SDD?
I retrofit the front radar sensor (adaptive cruise control) with a used unit but it was from a slightly newer module (newer year l494 2016) and now I'm getting a U2101 Control Module configuration incompatible on the CCM control module. So I need to flash the module to an older version/ compatible with my car. Is it possible and how do I go about doing it?
I know firmware flash can be done with iid GAP tool but I don't have it. Thanks
CCM Module Flashing via SDD – Range Rover Sport L494 (2014)
This is a common issue when retrofitting ACC radar modules across model years on L494. The U2101 code indicates the CCM (Cruise Control Module) firmware doesn't match what the vehicle's configuration expects. Here's what you need to know:
The Problem
Your 2014 L494 CCM has firmware expecting a certain generation radar sensor. The 2016 unit likely has a different part number and communication protocol revision, causing the configuration mismatch.
Options via SDD
SDD Module Programming (VCM/DOIP): SDD can flash/reprogram modules, but it depends on your SDD setup:
You need SDD with a valid engineering account or access to the "Module Programming" function (not just diagnostics).
SDD must have the correct VBF/firmware files for your CCM part number in its software repository.
Steps in SDD:
Connect via approved JLR VCI (Mongoose or original MDI, depending on SDD version).
Go to Diagnosis → Vehicle Configuration → Module Programming.
Select the CCM module.
If firmware files are available, SDD should offer to flash the module to the correct calibration for your VIN/vehicle spec.
Important Considerations
VBF Files: SDD needs the correct VBF firmware package. If your SDD installation is an older/offline version, it may not have the right calibration files. You may need to source the correct VBF for your CCM part number.
CCF (Car Configuration File): After flashing, you'll likely need to update the CCF to enable ACC with the correct radar sensor part number. This tells the vehicle what hardware is fitted.
As-Built vs. Retrofit: If your car was NOT factory-fitted with ACC, you also need the CCF edited to reflect the ACC option — otherwise SDD won't offer the correct firmware.
Alternative approach: Rather than downgrading the CCM firmware, consider whether you can update the CCF to accept the newer 2016 radar sensor. Sometimes the CCM firmware is fine but the configuration just needs to know a different part number is fitted.
If SDD Won't Offer the Flash
Confirm your CCM hardware part number — is it the same between 2014 and 2016, or did the physical module also change?
If the hardware is identical and only software differs, SDD should be able to flash it.
If SDD doesn't offer programming, you may need Pathfinder/SDD2 (newer JLR tool) or the IIDTool GAP you mentioned, or a JLR dealer session.
Can you confirm:
What is the part number on your fitted (2016) radar module?
What SDD version are you running (SDD1 with VCM, or SDD2/Pathfinder with DOIP)?
Was your 2014 L494 factory-equipped with ACC, or is this a full retrofit from scratch?
This will help narrow down whether a simple flash will resolve it or if CCF editing is also required.
Since this is a full retrofit, your vehicle's CCF (Car Configuration File) currently has no ACC option enabled. The CCM module doesn't know it should be communicating with a radar sensor at all, and the one fitted is from a newer revision — hence U2101.
You need to tackle this in a specific order:
Step 1: CCF Editing (Critical)
Before any flashing, you must edit the CCF to enable ACC in your vehicle's configuration. Without this, SDD won't offer the correct firmware calibration for the CCM.
In SDD 165:
Go to Diagnosis → Vehicle Configuration → CCF Edit
Find the ACC/Adaptive Cruise Control option and enable it
You may also need to set the correct radar sensor type/part number in the CCF
Write the updated CCF to the vehicle
Step 2: Module Programming (CCM Flash)
After CCF is updated:
Go to Module Programming
SDD should now recognise that ACC is configured and offer the appropriate CCM firmware calibration
Flash the CCM — SDD should select the correct VBF based on your VIN + updated CCF
Potential Problems
VBF availability: SDD 165 is relatively old. It may not have firmware files that support the FPLA-9G768-AC radar (2016+ part). If SDD doesn't offer a compatible calibration, you're stuck.
Part number mismatch: The -AC suffix radar may require a CCM software level that only shipped on 2015.5+ vehicles. Your 2014 CCM hardware may or may not support that calibration.
Mongoose limitations: Mongoose works for diagnostics and CCF editing, but module programming/flashing can be unreliable over Mongoose due to timing issues. JLR officially requires the VCM (DA-VCOM) for flashing. If the flash fails mid-write, you risk bricking the CCM.
Recommendations
Check CCM hardware part number — read it from the module label or via SDD. Confirm whether your 2014 CCM hardware can accept firmware that supports the -AC radar.
Consider sourcing a 2014-era radar (FPLA-9G768-AA or -AB) — this may be the path of least resistance. The older part would match your CCM hardware/firmware generation and likely clear U2101 once CCF is edited.
If you proceed with flashing via Mongoose — ensure battery is on a stable charger (13.8V+), do NOT interrupt the process, and accept the risk that Mongoose is not the ideal interface for programming.
Update SDD if possible — later SDD versions have more VBF files. Though 165 is fairly recent, confirm the VBF repository includes L494 MY2016 calibrations.
Summary
The likely fix is: CCF edit first → then flash CCM. But given the 2016 radar on a 2014 car with Mongoose, you may hit a wall where SDD simply doesn't offer a compatible calibration. In that case, either source an earlier revision radar (-AA/-AB) or look into IIDTool/Pathfinder access.
Let me know what you find after checking the CCF options and CCM hardware part number.
OK, so CCF is already edited and SDD sees the radar module but won't let you configure it as a new module. This is a common problem with retrofitted modules in SDD.
A few things to check/try:
1. "Configure New Module" vs "Module Programming"
These are two different functions in SDD:
Configure New Module — used when SDD detects a blank/virgin module that needs initial setup
Module Programming — used to reflash/update an already-configured module
Since your radar is a used unit (already configured from the donor 2016 vehicle), SDD won't see it as "new." It already has a VIN and configuration from its previous life.
2. Try "Module Programming" Instead
Go to Diagnosis → Module Programming → CCM
See if SDD offers a firmware/calibration update for the CCM
If it offers a file, proceed with the flash — this should overwrite the old config and align it with your VIN/CCF
3. If SDD Refuses Both Options
This usually means one of:
VBF mismatch — SDD 165 doesn't have a calibration file that bridges your 2014 VIN config with the 2016 -AC hardware
Part number not in scope — SDD doesn't recognise FPLA-9G768-AC as valid for your MY2014 VIN
Module needs blanking — the used module needs its old VIN/config erased before SDD will treat it as programmable for your car
4. Possible Workarounds
Clear the module's VIN — some JLR modules can be virgin-ised using engineering SDD functions or seed/key tools. Once blanked, SDD should then offer "Configure New Module."
Force flash via VBF manually — if you can source the correct VBF file for your CCM, some users have had success using SDD's engineering/backdoor programming mode or standalone flash tools.
Try SDD2/Pathfinder — later tool versions handle cross-year retrofits better and have wider VBF libraries.
Next Steps
Can you confirm: when you go to Module Programming (not "Configure New"), does SDD show the CCM in the list at all? Does it offer any action or just grey it out?
What error/message does SDD give when you try to configure it?
Is the U2101 on the CCM itself, or is another module reporting it against the CCM?
The exact error message or screenshot from SDD would help narrow down whether this is a VBF/file issue or a module-needs-blanking issue.
