MCUmall EPROM BIOS Chip Burner Forum
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 True USB Willem Programmer (GQ-2X, GQ-3X, GQ-4X)
 Problems writing AM29F400BT
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Perryking

7 Posts

Posted - 04/17/2016 :  07:10:44  Show Profile  Reply with Quote
Hi, I bought a new GQ-4X, latest software 7.03. I have problems writing AM29F400BT. I can read without problems with adapter 019, set jumper in 29F and 5V, but cannot write.

I tried with two memories.

Error message:

Write failed, address=0x01002E, buffer=0x36, device=0x85

What can I do to write on those memories? Any software or firmware update?

Thanks!
Reply #1

ZLM

2923 Posts

Posted - 04/18/2016 :  06:53:17  Show Profile  Reply with Quote
Try:

1. make sure all pin contacts are good
2. Slower speed.
3. latest software.
4. a different USB cable.
5. another chip

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Reply #2

Perryking

7 Posts

Posted - 04/18/2016 :  08:03:34  Show Profile  Reply with Quote
There are any adaptaer for this chips without springs?
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Reply #3

Perryking

7 Posts

Posted - 04/18/2016 :  09:44:31  Show Profile  Reply with Quote
I checked all pins continuity and ok. I tried also lower speed.

I can read the original flash file, and verify its ok. If I tried to load another file, fail.
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Reply #4

ZLM

2923 Posts

Posted - 04/18/2016 :  22:00:50  Show Profile  Reply with Quote

You need to erase the chip first.

Then write.
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Reply #5

Perryking

7 Posts

Posted - 04/19/2016 :  04:50:06  Show Profile  Reply with Quote
Thanks!

Solved.
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Reply #6

bostjannose

1 Posts

Posted - 10/31/2016 :  05:10:37  Show Profile  Reply with Quote
hi guys
I also can not read Am29F400BT. I use the adapter ADP-019, set jumper and 29f and 5V, but can not read. What is wrong.
Thanks
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Reply #7

ZLM

2923 Posts

Posted - 11/02/2016 :  12:29:36  Show Profile  Reply with Quote
There are many factors can cause the write fail.

First you need to get ID correct. If not, then check the chip with adapter contacting, also the bad chip will cause the incorrect ID reported.
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