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Warning: If you try any of the hacks here, you may brick your infotainment. (insert some general explanation about what has been done with the infotainment system and why)
It has been reported by some users that the modifications they had made DID persist after upgrading from one version to another. I believe that someone mentioned that when upgrading from v27 to v31, the Speed Restriction modification still worked after their system was upgraded. As for upgrading from v31 to v33 or the persistence of other modifications, I am unaware of anyone reporting about whether or not changes remained.
As a general rule, any mod that only requires running scripts (Speed restriction) will persist after upgrades.
Any mod that required modifying or replacing files (Disclaimer time, background image, wifi enable) will not persist between upgrades and will need to be reapplied.
Yes, you can downgrade the firmware to a previous version. Going from 31 to 29 to restore WIFI caused no issues. Obtaining previous versions is the hard part.
The failsafe file includes only what is necessary in the event that things go wrong. The PDF explaining how to perform the update even includes an image with the general size the files should be showing that the failsafe file is significantly smaller than the reinstall file.
The image can be seen here: http://i2.minus.com/iwNyo0wb2I8n8.JPG
Users have reported successfully performing an update without doing the factory reset. Results may vary.
Yes, format the usb drive using FAT32. I did the v33 upgrade last night, and used an 8GB usb key, quick formatted to FAT32 on a Windows 8.1 VM.
10. Where are system images available?
11. the top model of Mazda 2 skyactiv could update the firmware as well as mazda3 skyactiv or not ?
I have a 2015 Mazda 3 with version 55. Has someone tested if the “Disable touch-screen speed restriction” and “Reduce disclaimer auto-dismiss time” modifications work with the same commands? Thank you.
==== 14. I installed the pause/mute tweak. It worked for a few days then stopped. Tried to re-install but the system said “Tweak Already Installed”. How can I remove the tweak so it can be freshly installed? Thanks, ====