You must always use a proper flasher tool to read and save your original factory file before making any changes.
Чип-тюнинг: Серийные прошивки - SMS-Soft proshivki ebu bosh vaz skachat
Searching for and downloading firmware (прошивки) for Bosch electronic control units (ЭБУ) on VAZ (Lada) vehicles carries significant risks if done from unverified internet sources. You must always use a proper flasher tool
You can browse the SMS-Soft Firmware Database which indexes standard files for factory ECUs. proshivki ebu bosh vaz skachat
Practitioners and expert reviewers from the ADACT Technical Blog strongly advise against downloading free "packs" or files from unverified file-sharing platforms or forums. Flashing incorrect software carries extreme risks: