Looks like my problem might be relate to bad spring pins on the hat board. If I hold it to make contact, I get a JEDEC value from the flash but then it freezes:

make run
mpremote connect /dev/ttyACM0 exec "import machine; machine.reset()"

===================================================================
== Beginning IO configuration test.  Testing LOW IO chain...     ==
===================================================================


*** flashing Caravel

Caravel data:
   mfg        = 0456
   product    = 11
   project ID = 00000000

Resetting Flash...
status = 0x00

JEDEC = b'ef4016'
Erasing chip...
done
status = 0x0

I also found that the spring were very fragile, I wish a more solid connector was choosen

@proppy no, I didn't

Happy to comment on one if you plan to file it, or I'm also happy to file it if you don't have the bandwidth to do so.

@proppy I'm not sure. I don't have my board nearby. I think that my pins might have gotten damaged during shipment and/or packaging.

Apologies for reviving an old thread but +1 on the bent spring pins and I also have been stuck on the winbond sram issue. I have switched out dies and tried the suggestions throughout the channel

It's now a "known issue" that you cannot push the nucleo hat board all the way on or else a jumper will bend these.

Thank you! That was the fix!