Reply With QuoteHello, i know this post is old. I modified my programmer like the first post. But everytime i try to read the EEPROM the reading is only "FF FF ...""
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22nd December, 2019, 10:06 PM #16Junior Member
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I have been using this device CH341 for readinng and programming mainly BIOS for PC. I m trying now to read a 5P08C3 eeprom from my ECU to get the file and write it into a donor ECU eeprom. It seems the reading is ok (however I get sometimes different readings). My understanding is that it is possiblr to mod the CH341. M;y intent is to put a switch so that I can give 3,3 or 5 volts. I guess the 5 volt MUST be supplied to the Vcc pin (pin 8) of the chip. Is this correct?
Last edited by vince59; 22nd December, 2019 at 10:10 PM.
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10th January, 2020, 07:35 PM #17Newbie
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15th March, 2020, 04:59 PM #18Newbie
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I was able to read 95320 chips from radio and immo w/o modifying programmer. Used AsProgrammer from here https://github.com/nofeletru/UsbAsp-flash/releases (select correct chip type via IC - Search). I was checking correct pinout with multimeter to see that Ground on programmer's USB and Ground on ECU are the same. I used clip to read chip w/o soldering it out.
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16th March, 2020, 04:08 PM #19Member
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@hadesinua - thanks. With AsProgrammer I read 95640W - Blaupunkt -RCD 300 with soic8 (I modify cheap CH341A eeprom).
ThanksLast edited by zappaf; 28th March, 2020 at 06:31 PM.
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16th March, 2020, 06:38 PM #20Newbie
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How to use cheap CH341A programmer for read/write 95xxx Eeproms
Just wanted to say I really appreciate who made this guide I too was able to read some eeproms with this method. For those doing the mod I know this is self explanatory for some but for me wasn’t strait forward, this is how you do the capacitor mod. Also I added a file you can replace in AsProgrammer to get more types of chipsets in the search chiplist.zip
Adjustments.jpgLast edited by ferrarikid; 16th March, 2020 at 06:41 PM.
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1st April, 2020, 10:45 PM #21Junior Member
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thanks its work fine...... this a look ...thankyou
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15th April, 2020, 08:59 PM #22Newbie
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Many thanks for the howto, worked a treat to read a st95080. Thanks again.
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7th June, 2020, 11:12 PM #23Newbie
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I am trying to get the pin code out of the IPC on a Opel Corsa D. Where the data is on the eeprom M35080
I have this CH341A board i have used to get the eeprom data out of the ECU and now modded to 5V to read eeprom on IPC.
I can confirm it also work with eeprom M35080VP - With a homemade adapter cableLast edited by Mahave; 23rd June, 2020 at 01:51 PM.
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10th July, 2020, 02:08 PM #24Newbie
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Sorry guys a bit late on this post as I just saw it, to make the CH341 programmer read and write 95xxx eeproms you don't need to modify or add anything as everything is provided onboard, just move the jumper and it should read/write fine if it doesn't for some reasons then add two jumpers (one=original jumper and second=another jumper as shown in picture). Check the attached photo and move the jumper or add another to read/write the 95xxx eeproms.
20180915_182732.jpgLast edited by da14u; 10th July, 2020 at 05:38 PM.
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31st July, 2020, 01:30 PM #25DK Veteran
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Just adding M95160 and M95080 PDF specs.
If you have "W", "R" or "S" on end of chip you don't need 5.5V.
Only M95xxxx without any additional letters requires 4,5 - 5.5 V.
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6th August, 2020, 05:43 PM #26Newbie
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24C32 Fis can be read using this type of adapter? Any guide as how can be done?
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1st October, 2020, 08:27 PM #27DK Veteran
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yes adrianux, 24c32 can be read, no problem. Just take care to connect pin 1 correctly!
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5th October, 2020, 11:46 PM #28DK Veteran
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Here’s a good video explaining it all guys.
https://youtu.be/hPKckby54uA
Sent from my iPhone using Tapatalk
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11th October, 2020, 08:43 PM #29DK Veteran
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I cant get this programmer to work keep getting connection error -1. Any ideas?? Unmodified, trying to read a st95128RT
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11th October, 2020, 09:21 PM #30Top Poster
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Because the pin 1 is wrong. If you change the connector, you will get device connected.
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