MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X, GQ-3X, GQ-4X)
 M29F400FB Cant erase
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danmarq

11 Posts

Posted - 05/17/2017 :  22:44:12  Show Profile  Reply with Quote
Hello guys, i have an GQ-4x4 1.0 , Soft 7.11

I can read an M29f400FB with ADP-019 v4.1, but cant erase or re write.

checked pins , usb cable checked.

Check ID say :
Device id (hex) C0EC
Manufacture not in library
type unknown device
revision -

But anyway let me read it

Any idea? :/

Image Insert:

204574 bytes
Reply #1

anniel

1996 Posts

Posted - 05/18/2017 :  03:31:53  Show Profile  Reply with Quote
ID is no correct. The read is good or garbage?
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Reply #2

danmarq

11 Posts

Posted - 05/18/2017 :  06:33:09  Show Profile  Reply with Quote
good aparently, and verify is ok.
This is from an ECU EMS3134 what i need immo off

Is an ST chip , but only i can find this datasheet about it xxxxxxFB



Download Attachment:
1866755
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Reply #3

anniel

1996 Posts

Posted - 05/18/2017 :  07:40:53  Show Profile  Reply with Quote
Your datasheet gives the same ID as a Micron. Could the ST be a mask?
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Reply #4

danmarq

11 Posts

Posted - 05/18/2017 :  21:56:19  Show Profile  Reply with Quote
I try everything but i cant yet :(



Image Insert:

820480 bytes
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Reply #5

anniel

1996 Posts

Posted - 05/19/2017 :  04:33:04  Show Profile  Reply with Quote
When you say verify is ok, you verify against what file?
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Reply #6

danmarq

11 Posts

Posted - 05/20/2017 :  15:25:56  Show Profile  Reply with Quote
I verify soft, contact pins and dump, it was ok

I buyed another ST 29f400 "BB" and i can read , erase and write.

Maybe old eeprom was failed

Thank you very much for your interest for helping

Kind regards
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Reply #7

anniel

1996 Posts

Posted - 05/20/2017 :  19:15:08  Show Profile  Reply with Quote
Maybe or it is a mask version.
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Reply #8

supervizeur

462 Posts

Posted - 05/29/2017 :  06:22:37  Show Profile  Reply with Quote
Mask ROM are common in ECU.
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Reply #9

anniel

1996 Posts

Posted - 05/29/2017 :  09:48:10  Show Profile  Reply with Quote
quote:
Originally posted by supervizeur

Mask ROM are common in ECU.



True.
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Reply #10

supervizeur

462 Posts

Posted - 05/30/2017 :  06:46:43  Show Profile  Reply with Quote
You need to change the chip if you want to modify something.
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Reply #11

anniel

1996 Posts

Posted - 05/30/2017 :  14:43:11  Show Profile  Reply with Quote
quote:
Originally posted by supervizeur

You need to change the chip if you want to modify something.



True if you're dealing with a masked version.
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