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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Buying a device this old comes with risks. Ensure you verify the following: How to Buy a Used iPhone | PCMag
: Highly recommended for its strict listing requirements. Every device must be fully functional, and sellers must provide photos of the actual phone next to a unique verification code. In 2026, prices for a 16GB–64GB model typically range from $32 to $41 . best place to buy used iphone 5s
: Known for its 30-point inspection process. While inventory for older models like the 5s can be limited, it is a "sure thing" for those who want to avoid the risks of individual-seller marketplaces. What to Check Before You Buy Buying a device this old comes with risks
: Offers pre-owned units inspected by qualified suppliers. Most "Renewed" phones come with a 90-day guarantee , while "Premium" tier products can include a full year of coverage. In 2026, prices for a 16GB–64GB model typically
The iPhone 5s remains a popular choice for collectors, budget seekers, or those looking for a compact secondary device. As of , finding one in good condition requires looking at dedicated refurbished marketplaces rather than standard retail stores, as Apple no longer stocks this model. Best Places to Buy a Used iPhone 5s
: A top choice for "certified" refurbished units. They vet sellers rigorously and provide a 1-year limited warranty and a 30-day return policy.
: The largest inventory source. To stay safe, filter for "eBay Refurbished" listings, which often include free shipping, free returns, and a 1-year warranty via SquareTrade. Prices here can be as low as $29–$45 for functional units.
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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 Â
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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Buying a device this old comes with risks. Ensure you verify the following: How to Buy a Used iPhone | PCMag
: Highly recommended for its strict listing requirements. Every device must be fully functional, and sellers must provide photos of the actual phone next to a unique verification code. In 2026, prices for a 16GB–64GB model typically range from $32 to $41 .
: Known for its 30-point inspection process. While inventory for older models like the 5s can be limited, it is a "sure thing" for those who want to avoid the risks of individual-seller marketplaces. What to Check Before You Buy
: Offers pre-owned units inspected by qualified suppliers. Most "Renewed" phones come with a 90-day guarantee , while "Premium" tier products can include a full year of coverage.
The iPhone 5s remains a popular choice for collectors, budget seekers, or those looking for a compact secondary device. As of , finding one in good condition requires looking at dedicated refurbished marketplaces rather than standard retail stores, as Apple no longer stocks this model. Best Places to Buy a Used iPhone 5s
: A top choice for "certified" refurbished units. They vet sellers rigorously and provide a 1-year limited warranty and a 30-day return policy.
: The largest inventory source. To stay safe, filter for "eBay Refurbished" listings, which often include free shipping, free returns, and a 1-year warranty via SquareTrade. Prices here can be as low as $29–$45 for functional units.