Can Formulaflash perform VAG Simos PCR2.1 unlock?
It cannot unlock OTP.
But it can do pcr2.1 on bench without unlocking.
Read on bench ok.
Write on bench ok.
Write EEPROM back to be unlocked.
Checksum correction with formulaflash.
Works like a charm.
What’s the procedure:
Read eeprom, write eeprom for unlock and read ALL,
easy.
FormulaFlash read and write DC4 (Getrag) gearbox
on bench successfully.
Renault Captur 1.2 — DC4 (Getrag) TCU read before
attempt to repair — OK.
Read eeprom & flash ok.
Write eeprom & flash ok.
Bench mode.



FormulaFlash read and write Hyundai/Kia KEFICO ECU successfully.
Full Flash + EEPROM read on Bosch MED17.9.8 (TC1767) via Formula
Flash.
Supports Bench / Boot mode with automatic checksum.
Here read and write on bench mode ok.
IMMO OFF ok
Stage1.







FormulaFlash ECU programmer will release new software version 1.2.1.0 on August 27th, 2026.
UPDATE DATE: 2026.8.27
VERSION: 1.2.0.0
→ 1.2.1.0
Update Feature:
New DTC OFF ECUs
Toyota Denso Gen1 OBD / BENCH support
Expanded ECU protocol coverage
1. USER CENTER
NEW DTC OFF SUPPORT
17 NEW ENTRIES
2. Toyota Denso GEN1
New Read/Write Support
OBD / BENCH read-write support for Toyota Denso Gen1 black ECU family.
3. ADDITIONAL ECU READ / WRITE SUPPORT
Formulaflash programmer software 1.2.0.0 released BMW 2021+ MDG1 ECU bench unlocking feature. Here is an example of a locked MD1CP032 ECU. Formuflash unlocks this ECU in bench mode; no opening ECU required.
Quick search "Unlock" and select BMW bosch MD1CP032 ECU.
Choose bench mode and check wiring diagram.

Connect ECU with the Formuflash programmer via jumper cable.
Watch out the
small pins, use the smallest in the attachment box.
Click Connect in Unlock menu. It will unlock the ECU automatically.
Then read and save the ECU data.

Then write ECU. Formula flash will also do checksum correction.