[flashrom] Re: W25Q256JWEQ 1.8V

[Buhrow, Simon]

Hi Nicklas,

well, at least you don´t have a good (enough) connection to the chip.

Check your log file: "probe_spi_rdid_generic:" should give you the same ID as given in the datasheet of your chip. Further it should give you always the same value.
As the value changes a lot, it seems that you have bad cable connections or an signal integrity problem.
Check the cables/cable connections and try with a lower frequency if the programmer supports this. Try with cables as short as possible as well.

Regards,

Simon

-----Ursprüngliche Nachricht-----
Von: Nicklas Lennert  
Gesendet: Dienstag, 21. April 2020 15:49
An: [e-mail]
Betreff: [flashrom] W25Q256JWEQ 1.8V

Hi.

I'm trying to flash bios to a motherboard MSI B450M-A PRO MAX.

I have connected to the "new type" JSPI1 connectors.

Think i have a connection to the chip, but its not listed on your chip list. Gets a response only once every time i power up the chip.

I use a CH341A PRO programmer with a 1.8V converter. Then connected wires directly to the motherboard. No unsoldering. Ubuntu 18.04.4 LTS

https://www.winbond.com/resource-files/w25q256jw%20spi%20revb%2012082017.pdf

https://forum-en.msi.com/index.php?topic=322528.0 - Connected by this 
diagram

Can you help me?

Best regards

Nicklas Lennert

Denmark