I copied this from another thread from member Chemisus ....
2016 Mazda6 GT owner, and software developer here. You absolutely do not need to snip any wires to disable the speed restrictions on a 2016 Mazda6. What you do need is a way to SSH into the computer. The items needed to gain access are as follows:
- USB ethernet adaptor
- cat5/6 cable
- network router
- laptop with ssh (PuTTY if you're on windows)
- recommended: power inverter car capable of supplying power to router
Quick Steps:
1. plug usb ethernet adaptor into car's usb
2. run ethernet cable from usb adaptor to router
3. plug router into power inverter
4. plug power inverter into the slot in center console (it continues to supply power after engine is turned off)
5. turn on car
6. connect laptop to router (wireless is fine)
7. confirm that the car is establishing a connection with the router.
8. obtain ip address of car.
9. ssh into car with username of root.
10. password should be jci
11. once in, mount drive in write mode with "mount -o rw,remount /"
12. edit /jci/scripts/set_lvds_speed_restriction_config.sh with vi
From here I did what I found for Mazda 3 hack from user Zombiejunkie.
13. Type in: /jci/scripts/set_lvds_speed_restriction_config.sh disable 14. If done correctly it should say that it is disabled. 15. Type in: /jci/scripts/set_speed_restriction_config.sh disable 16. If done correctly it should say that it is disabled. 17. Turn your car off. 18. Exit out of the app or program.
Expanding:
7. confirm that the car is establishing a connection with the router.
Usually a light on the router that represents the port the cable is plugged into will be on. I did this while sitting in the parking lot at nearest best buy, ended up exchanging twice, third one (and cheapest) worked.
8. obtain ip address of car.
There are a few different ways this can be done. Most common methods are either ip scans, logging into the router via web browser and checking dhcp tables, or even simply trying to guess by ping. IIRC the dhcp tables will have a blank name for the car. Chances are the car will have an ip address of 192.168.1.X where X is 100 or slightly higher.
9. ssh into car with username of root.
With car ip of 192.168.1.101, on mac and linux, command would be "ssh root@192.168.1.101". I don't remember how PuTTY does it, but I think you provide username and ip address in separate fields.
12 & 15 editing
vi (yes, that is the name of the program) is the only editor on the disk. It's not as easy to use as vim (vi improved). A real simplified description of vi would be: it has two modes; command, and edit. vi starts off by default in command mode.
- To exit command mode, and enter edit mode, hit i.
- To exit edit mode and return to command mode, hit escape.
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