UPDATE: 1. A new gearbox (MAG) was installed in lieu of the old one. [MAG stands for Magic Gearbox Manual + Auto.]
02. Both manual and automatic modes are used with the new gearbox.
03. New values have been added and the gearbox settings have been adjusted.
4. Added DEF to boost engine output to 96–128 horsepower. Efficient Diesel Fuel (DEF).
05. The consumption of DEF and diesel has been modified.
06. The HUD's engine and vehicle speed display has been adjusted.
7. Color selection for different sections was added.
08. Dual wheels have also been fitted to the back; standard wheels no longer harm crops.
9. Pollution and damage to the vehicle [tractor] have been corrected.
10. Modified "ogg" sound files in the "gls" container; all sounds are now in 96 kbps format; sound equalization has also been introduced.

Thanks to Alex Vium for the mod.
Giants software files.