Yes... But i have to uncheck IDCheck anyway. And i do not get a reliable outcome, too. Sometimes there is some data, but no nice bios-uefi-file

I have already tried with lower clock speed. Tryed XM25RH256C now, too... everything without results. I also have to uncheck the "Check ID"-Checkbox, even if I ve chosen W25Q256FV. When I do the flash-detect, there are around 10 Chips to select and the ID is shown (EF 40 90). But when I try to read it, it says

Check-ID Error
Checked ID is 0 x 00 00 00

I dont think anymore the issiue is a contact-problem, as Xgpro passes the pin detection.

OK. That could be the reason, why it does not work. I used Xgpro, AsProgrammer and NeoProgrammer so far, but i cannot find any option for QSPI. In none of those 3 Programs....

Thx mon2 for your quick answer. But I wanted to avoid get this chip out of his circuit-board, so i would had to buy an hot air-solder-station, too. And I am scared to damage the board.
The XM25RH256C on the Latitude 5520 works very fine. I can read, write and erase the chip as i like even with my CH341A. But dont know, whats wrong with the 5520. I wrote my Problem in the "5520 BIOS Requests only"

The BIOS on the 5440 is on 2 Chips as far as I know.... WSON 8x6 and a little brother right next to him. I leave the little one... First i need to have access to the WSON...