WSON8 NEW Bios Chips READ, ERROR, ETC.

[feherhollo]

Hi,
I asking for help on some new WSON8 256MB chips. Please share your experience. I faced error on some new chips on read, erase, write with different programmers. These new chips are not exist in any programmers database. (GD25B256D, XM25RH256, W25Q256JV so on.)
I'm using RT809F V.5.0, EZP2023 Pro, CH341A Green

For the exact experience with GD25B256DYIG is RT809F erase the chip under 33sec. This kind of 256MB chip normal erase time is 70-120sec so I think not all the partitions are erased. If I do blank check or reread the buffer says FFFFFF but when I write the correct BIN the motherboard is dead.
Same for Latitude 7430 too. Too quick erase and can't write back or multiply read outs and everytime different data. WHY???? WHAT IS THE PROBLEM??

Mainly I'm using SOIC8 Pomona 5250 on SOIC8 chips and WSON8 cable on WSON8 8x6 sized chips.

Please share your experience how can you correctly read and write these chips and what programmer you do. I'm planning to buy SVOD4

Thanks

[feherhollo]

These chips usual have QE bit enabled and operates as Quad SPI mode. To check bits it is better to read out Protection bits table first.

[reformatt]

Are you doing these in circuit or out? This rarely if ever works for me with my SVOD3, especially with a clip. Always complains about pins not connected properly, or it just doesn't identify the chip correctly. I always remove and put on a socket. I'm currently using this one, as it even does the USON chips from T2 MAC's.

https://www.aliexpress.com/item/1005...d=RSvU3c8YBcf2

This was the one I was using previously and worked fine till I got the one above.

https://www.aliexpress.com/item/1005...d=TKu3pjSzJNrc

As far as programmer goes, SVOD for me has the most straightforward interface for most things. I rarely use my T56. The downside is the lack of documentation and support at times can be iffy. You can submit new unknown chips to the developer by the software if needed.

[feherhollo]

Are you doing these in circuit or out? This rarely if ever works for me with my SVOD3, especially with a clip. Always complains about pins not connected properly, or it just doesn't identify the chip correctly. I always remove and put on a socket. I'm currently using this one, as it even does the USON chips from T2 MAC's.

https://www.aliexpress.com/item/1005005185220559.html?spm=a2g0o.productlist.main.1 .6bcb576b1IGtRS&algo_pvid=7702c0fc-58d4-4203-ade5-3d6769ae2d16&algo_exp_id=7702c0fc-58d4-4203-ade5-3d6769ae2d16-0&pdp_npi=4%40dis%21AUD%2177.92%2177.92%21%21%2150 .37%21%21%402103245417010491174891234e9e68%2112000 032020822071%21sea%21AU%21140458520%21&curPageLogU id=RSvU3c8YBcf2

This was the one I was using previously and worked fine till I got the one above.

https://www.aliexpress.com/item/1005002036920820.html?spm=a2g0o.productlist.main.7 .3c5586f3izG1yi&algo_pvid=14777ca3-253f-4547-ba04-62633610b28d&algo_exp_id=14777ca3-253f-4547-ba04-62633610b28d-3&pdp_npi=4%40dis%21AUD%2125.42%2121.1%21%21%2116. 43%21%21%402103080c17010490439941576e08df%21120000 23168024491%21sea%21AU%21140458520%21&curPageLogUi d=TKu3pjSzJNrc

As far as programmer goes, SVOD for me has the most straightforward interface for most things. I rarely use my T56. The downside is the lack of documentation and support at times can be iffy. You can submit new unknown chips to the developer by the software if needed.

Thanks for the share. I try these in circuit. I don't have the equipments right now to take off the chip itself so I prefer in circuit right now. Or it is impossible with in circuit? I will get SVOD4 soon.