Chip Main Memory With The Contents Are In Disagreement Ch341a Top [top] Jun 2026

If the "Blank Check" fails after an erase, the chip is either write-protected or dead. Ensure the "Write Protect" (WP) pin isn't being pulled low by the motherboard circuit. Summary Checklist (clean the pins with isopropyl alcohol).

Thanks in advance.

[ CH341A Black PCB Voltage Flaw ] USB Port Input ---> 5.0V | +------------------+------------------+ | | v v AMS1117 Regulator CH341A Logic Lines Outputs: 3.3V (VCC Pin) Outputs: 5.0V Data Pins (MOSI/CLK) | | v v [ Safe for Chip Power ] [ UNSAFE FOR 3.3V CHIPS ] (Causes Write Corruptions)

For example, many users have reported that older versions like v1.18 or v1.30 fail while the works reliably for tricky chips. In one specific case, a user successfully resolved the error by switching from the standard CH341A software to the CH341A v1.31Free/1.4 version , while others used ASProgrammer 1.40 or newer.

Some chips have hardware write-protect (WP#) or hold (HOLD#) pins left floating. If these are not pulled high (3.3V), the chip rejects writes. Also, the chip itself could be dying — flash cells wear out after thousands of cycles. If the "Blank Check" fails after an erase,

❌ SPI flash memory cannot be overwritten directly. If you do not wipe it first, the new data and the old data will clash.

If you are working with a 1.8V chip (common in newer laptops), you use a 1.8V adapter. Forcing 3.3V or 5V will result in a verification error or a fried chip. 3. Software Alternatives

Bad chip or solder joint

Alternatively, if you want a :

This message indicates that the write process was unsuccessful, often leaving the chip partially written or with corrupted data, resulting in a bricked device. What Causes the "Disagreement" Error?

By systematically eliminating these variables—starting with chip removal, then software choice, and finally hardware inspection—you can reliably resolve this error. The CH341A remains an incredibly useful and cost-effective tool for electronics repair, and understanding how to debug its most common failure mode is an essential skill for anyone working with SPI flash memory.

Most CH341A kits utilize an SOP8 IC test clip to program chips without desoldering them from the circuit board. These clips are notoriously unstable.

Below is a guide and helpful review of how to fix this common issue. 🛠️ Top 4 Causes & Quick Fixes 1. Poor Clip Contact Thanks in advance

Generic CH341A software often misidentifies flash chips or fails to utilize the correct manufacturing algorithms.

If every byte matches, the operation succeeds. If there is even a single mismatch, the software halts and throws a verification error. The "chip main memory with the contents are in disagreement" message is simply an older or more verbose way of saying,

. It indicates that the data written to the chip does not match the source file or the verification buffer. Win-Raid Forum Primary Causes of Disagreement