If you are updating, just replace the telemetry.jar in your installation.
If you are doing a new installation, read the ReadMe.txt first on how to install the tool.
Key changes in Version 10.1:
Added new cars in GT4 DLC
Updated the ACC_Relay to retrieve new data added in 1.15 of ACC. You must use the new relay 1.05 with the Telemetry tool version 10.1.
Now Shumacher edition cars are also detected by the tool
Fixed issues on some small issues with other game data
Fixed: Wheelspeed was saved as m/s instead of km/h to the lapdata
GHOST updates (F1 2020 & F1 2019)
With Ghost, do NOT restart/flashback the lap during the first two laps with new ghost. If you do, the data gets messed up.
F1 2019: in F1 2019 mode, the Ghost trace works and date is saved correctly
F1 2020: Both F1 2020 feed and F1 2019 feed, the Ghost trace works and date is saved correctly
Added (optional) scale to the graphs and made it better in showing some of the data
Fixed bad clipping in the map on some situations
Fixes on some areas for the customizable colors
Fixed multilap traces position when zooming/dragging the map
Fixed multlap line widths to adjust when changing the racing line width in settings
Adjusted how the map is positioned on the windows, if user presses reset map.
Fixed other bad clipping of the track map.
UI /Map colors settings
Added trace line width slider for Telemetry trace lines.
Added option to settings to show the speed in MPH in areas of UI, where it is feasible.
Other little fixes and tweaks
Unless there is some super show-stopper bug, I expect this to be last version for some time, i.e. until there are new tracks for AMS2 or ACC.