Hello I need a gearbox firmware update.

I was looking at iid gap tool, which I think does this.

Are there any alternatives/ cheaper options to do this.

I used to have vdcs for my Audi and found it very useful.

I’d appreciate someone’s more experienced advice.

Thanks mark.

JLR SDD and a Mongoose cable is another way, do a search here and on the jag forums. It's involved so definitely do a lot of research. GAP might be easier, IDK. Ebay sells packages.....

Many thanks. Fortunatley Ive found a very good local JLR technician - but thank you for your feedback