alex_b
Member
Last Activity: 07-24-2022, 07:35 PM
Joined: 08-21-2021
Location: Oklahoma
-
Re: How to flash W25M02GVZEIG chips?... -
Re: How to flash W25M02GVZEIG chips?
[url]https://i.ibb.co/LvkHXyT/6264701360679268614-121.jpg[/url]
There you go. I have placed the images top-bottom in a mirror style.
So where the small pale yellowish dot is right next to the winbond name, bottom right side of the top image (the image of the chip), when I flip the board on the reverse side, those pins are right underneath the chip in the same spots/positions. At least it seems like it, I have no full proof way of confirming.
So when I reverse the board, where the red wire is attached to, it's the...Leave a comment:
-
Re: How to flash W25M02GVZEIG chips?
@diif I am indeed. Really don't want to take it off unless there's no alternative at all.
@stj Do you mean I have soldered the red wire on pin 4 or I need to solder it on pin 4. Currently it is soldered to the pin 1. (The board is on the other side and when I flip that point should be the pin 1 on the back side)
Since you didn't answer about the adapter (SOP16/8), I'm assuming the adapter doesn't matter then?...Leave a comment:
-
Re: How to flash W25M02GVZEIG chips?
I do have the pin 1 marking for sure. So wherever pin 1 is, it supposedly marks the pin 1 on the fig A?
And the rest of the pin follows as is. Gotcha.
Well then I guess the issue is with the programmer and the adapter. I do not have a wson adapter and can't get easily and quickly. And my programmer doesn't have pin points like the ch314A and only has the socket for the adapter.
Now I did solder the wires on reverse side of the chip like this. All 8 of them. This set of wire I stripped from...Leave a comment:
-
Re: How to flash W25M02GVZEIG chips?
I see. I found your response to a similar thread about wson chips. Now I have two issues then.
The programmer I have is EZP2019+ not the ch341A. I am assuming I'll need to figure out the pin layout for it (it doesn't has pins and only adapter board can be used, but perhaps I could simply try and push the wires deep and make sure it connects with the pins inside it? Will that work)
Secondly, I still have no idea which pin corresponds to which one. I have attached 2 pics below.
A.) Pad...Leave a comment:
-
Re: How to flash W25M02GVZEIG chips?
Did you check them out yet @stj?Leave a comment:
-
Re: Unable to Write Bios File to SOCIC 25Q128FVPQ Chip
What chip did the board have previously?Leave a comment:
-
Re: How to flash W25M02GVZEIG chips?
[url]https://www.winbond.com/hq/product/code-storage-flash-memory/qspinand-flash/?__locale=en&partNo=W25M02GV[/url]
The datasheet is just there.
For reference, check out section 3.1 on page 7 and section 11.1 on page 68.
3.1 shows the pad configuration which shows the internal pads to be on the long side of the chip. While 11.1 shows how they look on the chip when they have to be soldered.
That is how the chip is soldered, as far as can be seen from the naked eye without taking the...Leave a comment:
-
Re: How to flash W25M02GVZEIG chips?
I see. Could you perhaps give a little visual of the pad configuration of the chip? I pulled the datasheet but I can't make sense from it. The pin/pad configuration it has doesn't match the solder points from the chip.
The pin configuration is specified on the horizontal (longer) side of the chip while the package specification accurately depicts where the solder points should be, on the vertical (shorter) side. I want to make sure what solder point corresponds to which pin on the chip....Leave a comment:
-
Re: How to flash W25M02GVZEIG chips?
By lowering the board, do you mean I give it supply from it's own charger or just the power it gets from the programmer?
I thought when I soldered them it takes care of it all, is that not the case? Is that why adapters are needed?...Leave a comment:
-
Re: How to flash W25M02GVZEIG chips?
Thanks but am I really in the need of adapters? I thought the point of adapters was only when if you could remove the chip from board. If you can't then adapter is barely only used to make contact with the wires. Or am I wrong?
Not that I can't order one from AliExpress. It'll take more than a month or even 2 to reach though....Leave a comment:
-
Re: How to flash W25M02GVZEIG chips?
No I am not. One of the boards I have has soldering pads on the reverse side of where chip is soldered. I soldered the wires there.
Although I am still using the SOP16/8 to DIP8 adapter, someone told me to instead connect the wires directly to the programmer. Yet to try it still.
(I reckoned that the adapter only mattered if the chips were to be soldered on it, and if I were using some clip or soldered the wires to the actual board against the chip, using a different adapter might not matter)Leave a comment:
-
How to flash W25M02GVZEIG chips?
Hi there,
I am here trying to dump firmwares for a couple of old routers and they all come up with a W25M02GVZEIG chip (W25M02GV winbond 25 series spi nand flash, package type ZE wson8 chip)
The programmer I am using is ezp2019+ and I had to solder the wires to the pins. But unfortunately I am unable to read it with it.
So I want to know whether this chip can be dumped or not, whether ezp2019+ can dump it or not and if not, what programmer should I use and what instructions I should follow up? -
Re: New Members - please post your introductions here
Just looking to fix my mobo
Leave a comment:
No activity results to display
Leave a comment: