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benaknoun
Spain
133 Posts |
 Posted - 07/15/2013 : 14:10:29
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Hi
I'm trying to write a 95040 but the GQ-4X says verify failed.
I was doing this with the chip still on the board.
I then desoldered the chip and tried again and it's the same problem.
I tried with speed 0 too.
Does it mean the chip is damaged?
Thanks |
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| Reply #1
ZLM
2945 Posts |
Posted - 07/15/2013 : 15:31:49
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make sure you erased the chip and passed blank check.
if it has no pin contacting issue, then most likely the chip is bad. Try a slower speed too. |
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| Reply #2
benaknoun
Spain
133 Posts |
Posted - 07/15/2013 : 16:39:28
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Hi
Thanks for the reply..
What i normally do, open the file i need to write then click on "write", it usually works, but not on this chip.
Are you saying i must erase and do blank check first? before writing?
Should i use auto mode? |
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| Reply #3
benaknoun
Spain
133 Posts |
Posted - 07/15/2013 : 16:45:25
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Hi again
I just clicked on "erase", and it says " this function is not supported on this device, or this chip does not need erase".
Then i clicked on "blank check", and it says " chip is blank ".
So it looks like the chip is blank, so i tried to write on it again and it writes ok but then it says " verify failed ".
What do you think? |
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| Reply #4
benaknoun
Spain
133 Posts |
Posted - 07/15/2013 : 17:06:29
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I'm confused now!
On the GQ-4X, i tried many times to write the chip, and it keeps saying "verify failed".
I tried with slowest speed -2 and it's the same.
then i tried my other programmer, Wellon VP990, and it worked, it read ok, write ok, verify ok.
I then tried again in the GQ-4X and it says "verify failed" and it won't read it ok, it comes with different file data.
Deos this mean my GQ-4X is faulty? |
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| Reply #5
benaknoun
Spain
133 Posts |
Posted - 07/15/2013 : 17:35:59
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| Strange thing is that if I do blank check on GQ-4X it says "chip blank" but on VP990 it reads ok and is not blank. |
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| Reply #6
ZLM
2945 Posts |
Posted - 07/16/2013 : 06:56:15
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| Try any other SPI chips, if the GQ-4X has same symptom, then the problem may come from the programmer. Otherwise the chip may have some compatibility problem. |
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Topic |
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Can't write a 95040
