How to Read And Flash BIOS Bin Using CH341A. Flashing or reading BIOS bin files may sound intimidating, but with the CH341A programmer, it becomes a manageable task, even for beginners. Whether you’re repairing a dead laptop, modifying firmware, or backing up your BIOS, this small and affordable tool is a must-have for tech enthusiasts and repair technicians alike.
In this guide, we’ll walk you through how to read and flash BIOS bin using CH341A step-by-step. We’ll also cover essential tools, safety tips, and common issues to avoid.
CH341A Programmer Software Free Download
What is CH341A Programmer?
The CH341A programmer is a USB device used to interface with EEPROM and SPI flash memory chips. It’s often used for BIOS flashing, unlocking laptop firmware, and even recovering bricked motherboards. It supports a wide range of 24 and 25 series EEPROM chips.
Tools Needed To Read and Flash BIOS Bin Using CH341A:
Before we dive into the process of how to read and flash BIOS bin using CH341A, make sure you have the following tools:
-CH341A programmer (black or green version)
-SOIC8 clip or SOP8 socket adapter
-BIOS chip datasheet or part number
-CH341A software (v1.29 or NeoProgrammer)
-Valid BIOS bin file
-Computer with Windows OS
How to Read And Flash BIOS Bin Using CH341A:
How To Read BIOS Bin Files Using CH341A?
Step 1:-Identify the BIOS Chip on the Motherboard:
1.Look for an 8-pin chip labeled something like 25Q64, W25X32, MX25L8005, etc.
2.These are SPI Flash memory chips containing the BIOS firmware.
3.Refer to the motherboard schematic or look up the chip’s datasheet online to confirm compatibility.
Step 2:-Connect the SOIC8 Clip or SOP8 Adapter:
You have two options:
-SOIC8 Clip Method (in-circuit):
1.Attach the clip directly onto the BIOS chip while it’s still soldered to the motherboard.
2.Make sure Pin 1 (often marked with a dot or notch) on the chip aligns with Pin 1 on the clip (usually red wire).
{This method is generally not very usable as it sometimes doesn’t detect the chips correctly.
-SOP8 Adapter Method (if desoldered):
1.If you’ve removed the BIOS chip, insert it into the DIP socket on the CH341A.
2.Again, pin 1 alignment is critical.
Step 3:-Plug CH341A Programmer into USB Port:
1,Connect the programmer to your PC via USB.
2.If it doesn’t auto-detect, install the CH341A USB driver:
3.You can download it from GitHub or forums like Win-Raid.
4.Confirm driver installation in Device Manager under Ports (COM & LPT) or USB Controllers.
Step 4:-Launch CH341A Software:
You can use either of the following:
-CH341A Programmer v1.29 (default)
-NeoProgrammer (recommended for better UI and chip detection)
In the software:
1.Choose your chip model from the drop-down menu.
2.Click “Detect” to confirm it reads the chip properly.
3.If it fails, double-check your connections and clip alignment.
Step 5:-Read and Save the BIOS File:
1.Click “Read”. The software will begin copying the BIOS data into memory.
2.Once done, click “Save” and choose a name like original_bios_backup.bin.
3.This backup is critical in case something goes wrong during flashing.
How To Flash BIOS Bin Using CH341A?
Step 1:-Load the New BIOS Bin File:
1.Click “Open” and select the .bin file you want to write.
2.Ensure it matches your motherboard model and version (check on manufacturer’s site or use tools like RWEverything or CPU-Z to identify motherboard).
Step 2:-Erase the Existing BIOS:
1.Click “Erase” to remove the contents of the chip.
2.This ensures no old data corrupts the new BIOS file.
Step 3:-Program the Chip:
1.Click “Program” or “Write”.
2.This writes the new data from the .bin file onto the BIOS chip.
3.The process typically takes 30 seconds to 2 minutes, depending on file size.
Step 4:-Verify the Flash:
1.After programming, click “Verify”.
2.The software will compare the file on the chip with the original .bin file.
3.If the data matches, the process is successful.
Step 5:-Disconnect and Reassemble:
1.Unplug the USB programmer.
2.If you used a clip, simply detach it.
3.If you removed the chip, re-solder it or place it back in its socket carefully.
4.Power on the system and enter BIOS to verify everything is working.
Additional Pro Tips For How To Read And Flash BIOS Bin Using CH341A:
Backup First:
Always back up the original BIOS before flashing. You can’t undo a flash without a valid original copy.
Use Stable Power Source:
Avoid flashing on unstable USB hubs or during power fluctuations.
Double Check File Version:
Flashing the wrong bin file can brick the motherboard.
Use NeoProgrammer for Better Compatibility:
It supports more chips and provides clearer error messages.
Safety Tips for Using CH341A:
-Use a regulated USB hub if your computer’s USB power is unstable.
-Always ground yourself to prevent static discharge.
-Make sure to match the chip voltage (3.3V vs. 5V) with the jumper setting on the programmer.
-Avoid flashing while the motherboard is powered or connected to a battery.
Why Use CH341A for BIOS Work?
Using CH341A is cost-effective and beginner-friendly. It bypasses the need for bootable USBs or risky in-system BIOS updates. Whether you’re a technician or a hobbyist, learning how to read and flash BIOS bin files using CH341A adds a valuable skill to your toolkit.
Conclusion:
Understanding how to read and flash BIOS bin using CH341A allows you to recover bricked systems, upgrade firmware, and gain low-level control over your hardware. With minimal tools and some patience, you can master this essential repair technique and bring dead laptops or desktops back to life.
Take your time, always back up your data, and double-check each step. Once you get the hang of it, BIOS flashing becomes a straightforward and rewarding process.
FAQ – How To Read And Flash BIOS Bin Using CH341A
Q1:-Is CH341A compatible with all BIOS chips?
A:-It supports most 24 and 25 series chips, but always verify compatibility using the chip’s datasheet.
Q2:-Can flashing the wrong bin file damage the motherboard?
A:-Yes. Always use the correct bin file for the motherboard model and revision.
Q3:-What’s the best software for CH341A?
A:-CH341A Programmer (v1.29) is widely used, but NeoProgrammer offers a better interface and broader chip support.
Q4:-Can I flash BIOS without removing the chip?
A:-Yes, using the SOIC8 clip allows in-circuit programming without desoldering.
Q5:-Is it safe to use CH341A on a laptop motherboard?
A:-Yes, but ensure the motherboard is disconnected from any power source and battery.
If you want the detail video help, click the link:- How To Use CH341A Programmer