Samsung SMT-3231/EX BN41-02004A W25Q16DV SPI flash dump

User question

DUMP SAMSUNG smt-3231/ex-bn41-02004a 25Q16DV

Artificial Intelligence Response

Direct answer to the question

You are looking for a SPI flash dump / firmware BIN for:

• Samsung SMT-3231/EX
• Main PCB marking: BN41-02004A
• SPI flash: Winbond 25Q16DV / W25Q16DV
• Dump size required: 2,097,152 bytes = 2 MB

I checked current indexed sources and did not find a publicly indexed, confirmed dump specifically named “SMT-3231/EX BN41-02004A 25Q16DV”. I can still guide you on how to obtain the correct dump safely, how to read your existing chip, and how to program a replacement. The W25Q16DV is a 16-Mbit SPI NOR flash, 2.7–3.6 V device, organized as 8192 pages of 256 bytes and supporting standard/Dual/Quad SPI. (content.arduino.cc)

Detailed problem analysis

1. Important identification issue: BN41 is not enough

For Samsung boards, BN41-02004A is usually the bare PCB number, not the final assembled board/firmware identity. The final assembly number is normally BN94-xxxxx or sometimes BN97-xxxxx.

This matters because the same BN41 PCB can be used in different products or panel sizes with different firmware, panel parameters, LVDS/eDP mapping, option bytes, and service settings. Current parts listings show BN41-02004A associated with several BN94 assemblies, for example BN94-06440B for LH46MDCPLGA/ZA and BN94-06441B for LH55MDC/LH55MDCPLGA/ZA. (tvpartstoday.com)

So for a reliable dump, you should match:

• Full monitor model: SMT-3231/EX
• Main board sticker: BN94-xxxxx
• PCB number: BN41-02004A
• Panel model sticker
• Region/version if shown
• Flash size: 25Q16DV, 2 MB

The SMT-3231 itself is a 32-inch Samsung/Samsung Techwin Full HD security monitor with HDMI, DVI, VGA, component/CVBS, Ethernet and RS-232 control, so using firmware from a larger MDC signage board may not be safe unless the BN94 and panel configuration match. (hanwhavisionamerica.com)

Correct W25Q16DV pinout

Be careful: some generic repair notes online show the wrong pinout. The correct SOIC-8 pinout from the W25Q16DV datasheet is:

 W25Q16DV SOIC-8
┌───────────────┐
/CS 1 │● │ 8 VCC 3.3 V
DO 2 │ │ 7 /HOLD
/WP 3 │ │ 6 CLK
GND 4 │ │ 5 DI
└───────────────┘

Connection to programmer:

W25Q16DV pin	Signal	Programmer signal
1	/CS	CS
2	DO / MISO	MISO
3	/WP	Pull up to 3.3 V or WP
4	GND	GND
5	DI / MOSI	MOSI
6	CLK	CLK
7	/HOLD	Pull up to 3.3 V or HOLD
8	VCC	3.3 V only

The W25Q16DV operates from 2.7 V to 3.6 V, so do not apply 5 V to the flash. (content.arduino.cc)

If you need a known-good dump

Because I did not find a confirmed public dump, the best options are:

1. Clone from an identical working board

   • Same model: SMT-3231/EX
   • Same BN94 assembly number
   • Same panel model
   • Same flash IC size: 25Q16 / 2 MB

2. Search repair repositories/forums

   • Search terms:
     • SMT-3231 EX BN41-02004A dump
     • SMT-3231 25Q16DV bin
     • BN41-02004A 25Q16 dump
     • BN94-xxxxx 25Q16 dump
   • Use your actual BN94 number in the search, not only BN41.

3. Use donor board firmware

   • Buy a donor board with the same BN94 number.
   • Read the 25Q16DV from that board.
   • Write it to your board’s flash.

Reading your original 25Q16DV

Before writing anything, always save your original flash content.

Recommended tools:

• RT809H / RT809F
• TL866II Plus / T48 / T56
• CH341A, but only if confirmed 3.3 V
• flashrom-compatible SPI programmer

Recommended procedure:

1. Remove AC power from monitor.
2. Locate the 25Q16DV near the main SoC.
3. Preferably desolder the SPI flash for a clean read.
4. Read the chip at least 2–3 times.
5. Compare checksums.
6. Save the original dump permanently.

Expected dump size:

2,097,152 bytes

Example with flashrom:

flashrom -p ch341a_spi -r smt3231_read1.bin
flashrom -p ch341a_spi -r smt3231_read2.bin
sha256sum smt3231_read1.bin smt3231_read2.bin

If both SHA-256 hashes match, the read is probably stable.

Programming procedure

After obtaining a correct 2 MB dump:

1. Open programmer software.
2. Select W25Q16DV / W25Q16 / compatible 16-Mbit SPI NOR.
3. Read chip ID.
4. Erase chip.
5. Blank check: all bytes should be FF.
6. Program the 2 MB BIN file.
7. Verify byte-for-byte.
8. Reinstall chip with correct pin-1 orientation.
9. Power on and test.

Example with flashrom:

flashrom -p ch341a_spi -w known_good_smt3231.bin
flashrom -p ch341a_spi -v known_good_smt3231.bin

Practical repair warnings

In-circuit reading may fail

On Samsung main boards, reading with a SOIC-8 clip while the chip is still soldered can be unreliable because:

• The main SoC loads the SPI bus.
• Other devices may share the bus.
• The programmer may partially power the whole 3.3 V rail.
• Clip contact is often poor.

If the dump reads as all FF, all 00, or changes every read, desolder the chip and read it off-board.

Check hardware before blaming firmware

Firmware corruption is possible, but these symptoms can also be caused by power or SoC faults:

Symptom	Possible cause
Dead, no standby LED	PSU or standby regulator
Standby LED only	SoC core rail missing, corrupted SPI, reset problem
Boot loop	SPI corruption, bad PSU ripple, SoC/BGA fault
Backlight on, no image	panel/T-CON/LVDS option mismatch
Wrong colors/inverted image after flashing	wrong panel data/dump

Measure first:

• 3.3 V at pin 8 of W25Q16DV
• 1.8 V / 1.5 V memory rail if present
• 1.2 V / core rail for main SoC
• Reset line activity
• Crystal oscillator activity
• Excess ripple on standby supply

Ethical and legal aspects

The SPI dump is normally proprietary Samsung firmware. I cannot provide or attach an unauthorized binary image here. For repair, the safest legitimate approach is to:

• Dump your own chip.
• Use an authorized service source.
• Clone from your own identical donor board.
• Preserve the original dump in case it contains unique settings, serial data, EDID, MAC address, or service options.

What I need from you to help further

Please provide these details and I can tell you the safest dump-matching strategy:

1. Full rear label model:
Example: SMT-3231/EX or full regional code
2. Main board sticker:
BN94-xxxxx
BN97-xxxxx
BN41-02004A revision
3. Panel model from LCD sticker
4. Fault symptom:
Dead / standby only / boot loop / logo only / no backlight / distorted image
5. Programmer available:
CH341A / RT809H / TL866 / other

Brief summary

You need a 2 MB BIN dump for the W25Q16DV / 25Q16DV on a Samsung SMT-3231/EX BN41-02004A board. I did not find a confirmed public dump by that exact name. Do not rely on BN41 alone; match the BN94 assembly number and panel model. Read your original chip first, verify multiple reads, use only 3.3 V, and preferably desolder the flash for reliable programming.

Disclaimer: The responses provided by artificial intelligence (language model) may be inaccurate and misleading. Elektroda is not responsible for the accuracy, reliability, or completeness of the presented information. All responses should be verified by the user.