Enhanced/Dual Powered
Willem EPROM Programmer
User Guide Â
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Main Board / Cables
Main Board PCB3.5

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Main Board PCB4E

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Main Board PCB5.0

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Main Board PCB5.5C

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Parallel Data Cable (Printer extension cable, with male-female 25 pin connector, and pin to pin through) |
A-A type USB cable(for power) |
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Optional Items:
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ATMELÂ 89 Adapter |
ATMEL PLCC 44 Adapter |
TSOP 48 Adapter |
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FWH/HUB PLCC32Adapter |
PLCC32 Adapter |
SOIC Adapter(Simplified) |
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On-Board |
On-Board |
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AC or DC Power Adapter (9V or 12V, 200mA) |
SOIC Adapter(Professional) |
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The Landi Renzo Omegas software offers a range of features, including:
Common versions available through professional LPG equipment sites include Omegas 2.16.9C, 2.9.0, and 3.1.0. Software Installation & Requirements
: Authorized installers can download the latest versions (such as 4.2.0.85 or 3.1.0 ) directly from the Landi Renzo Download Section . Landi Renzo Omegas Software Download Full
Always cross-reference file hashes (MD5/SHA256) or download only from known tuning communities with verified uploaders.
: Windows 98 SE, ME, 2000, XP, or later (7/10 compatible versions exist). : A specialized hardware key or a diagnostic interface cable is required for a direct ECU connection. Storage/RAM : Approximately 20MB free disk space and at least 16MB RAM. Third-Party Resources The Landi Renzo Omegas software offers a range
: As of February 2020, a notable stable release is Version 4.2.0.85 , which supports newer firmware for Omegas, EVO, and OMEGAS3 ECUs.
Several specialist LPG platforms host older versions (e.g., 2.16.x) for legacy systems: : Windows 98 SE, ME, 2000, XP, or
If you are looking for specific legacy versions or diagnostic tools without a manufacturer login, several specialized LPG automotive sites host these files:
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Hardware Installation & Configuration
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Installation Steps
         (Note: the LPT port of PC MUST set to ECP or ECP+EPP during BIOS setup. To enter the BIOS setting mode, you need press "Del" key or "F1" key during the computer selftest, which is the moment of computer just power up.)  Software Version To Use | |||
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         The software interface:  | |||
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 Hardware
Check  | |||
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 PCB3.5/PCB4E
PCB5.0
PCB5.5C
Note: the Vcc setting jumper only has effect when you are using AC adaptor as power source. For the USB power only 5V Vcc is available. For the PCB5.5C, set DIP steps: 1. press DIP Set button twice to check current DIP bit position. Then set it again for ON or OFF. 2. press DIP Bit shift button to shift the DIP bit position to where need to set. And then press DIP Set button twice to check current DIP bit position. Then set it again for ON or OFF. 3. Repeat those steps till all DIP bit ae set same as software indicated. For PCB5.5C voltage and Special chip selection: 1. Put back the safety jumper. 2. Press the voltage button and hold for 1 second, the voltage LED should move to next. Repeat till desired voltage LED light up. 3. Press the chip selection button and hold for 1 second, the chip LED should move to next. Repeat till desired LED light up. 4. Remove the safety jumper to lock the selected voltage and chip selection DIP Switch (PCB3.5, PCB5.0)
When programming one chip, follow the program prompt to set DIP switch .  |
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The Landi Renzo Omegas software offers a range of features, including:
Common versions available through professional LPG equipment sites include Omegas 2.16.9C, 2.9.0, and 3.1.0. Software Installation & Requirements
: Authorized installers can download the latest versions (such as 4.2.0.85 or 3.1.0 ) directly from the Landi Renzo Download Section .
Always cross-reference file hashes (MD5/SHA256) or download only from known tuning communities with verified uploaders.
: Windows 98 SE, ME, 2000, XP, or later (7/10 compatible versions exist). : A specialized hardware key or a diagnostic interface cable is required for a direct ECU connection. Storage/RAM : Approximately 20MB free disk space and at least 16MB RAM. Third-Party Resources
: As of February 2020, a notable stable release is Version 4.2.0.85 , which supports newer firmware for Omegas, EVO, and OMEGAS3 ECUs.
Several specialist LPG platforms host older versions (e.g., 2.16.x) for legacy systems:
If you are looking for specific legacy versions or diagnostic tools without a manufacturer login, several specialized LPG automotive sites host these files: