T25.48 is the next one after S26.17. 25.48 broke a few things on 2022 radios, so 25.51 is the rushed fix for 25.48.
T27.46 is a UI improvement update that was already being worked on when they released 25.48. One thing I’ve noticed is it puts the trailer tow pages in the dashboard with off road pages, instead of buried in the “other” section of the apps menu.
View attachment 63504
You can go straight from S26.17 to T27.46.
On another note, I also perform a factory reset after every update. After the whole debacle of 2023 owners not being able to get the blinker cameras working until someone finally tried a factory reset, I just do it every time no matter what now. Most people will say that they never have any issues after an update so no need to factory reset, but they don’t realize that there might be new features or improvements from the update that may not have loaded, or won’t load until a factory reset.