For users of ECUDesk Premium and HP+

RESTORE STOCK (ECUDesk 2.4.0.0, desktop client and Telegram Mini App)

Returns an already modified file to factory values: switched-off DTCs come back on, and EGR/DPF/CAT and other feature patches are removed. Maps, coding and all other data stay untouched.
The button appears only when the ECUDesk database holds an original of the same software version that matches the file everywhere except the tuning changes.
Shown on every subscription; using it requires Premium. Use it first, before any other feature.
After the restore, features can be applied again. The file name gets _stock.