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NV DATA and Flash on JLR: reading, saving and writing configuration and flash files for module replacement

Two special functions used when replacing a control unit on Jaguar/Land Rover: "NV DATA" handles the module's configuration data, "Flash" handles the flash file itself. The Flash function is also used for flash tuning.

Procedure

1. Connect the AVDI to the OBDII socket and to the PC, connect a power supply/battery maintainer to the vehicle battery and open the JLR application.
2. Establish diagnostic communication and scan the control units to identify the module you need to work on.
3. For configuration data: open the "NV DATA" special function, select the module and read the configuration data, then save it to the PC as a backup.
4. On the new or replacement module, load and write the configuration data saved from the original module using "NV DATA".
5. For the flash file: open the "Flash" special function, select the module and read the flash file, saving it to the PC.
6. If required, update or write the flash file to the module (control unit replacement or flash tuning) and let it finish without interrupting power or the connection.
7. When finished, cycle the ignition off and on, rescan, clear the DTCs generated during the job and check the module works correctly.

Reference screenshots