I've been reading and measuring and soldering everything to fix the bug. With some datasheet help and my trusty multimeter. I did the following fix:
Soldering the SCK pin (only soldering this pin does not fix the CRC errors)
Soldering pin 7 to pin 8 on the flash chip finishes the fix.
So first my log shows:
OTA:FWP:FL DUMP 437A:0000000000000000000000000000000018530
Now the log shows
TSF:MSG:READ,0-0-45,s=255,c=4,t=3,pt=6,l=22,sg=0:03000D0003000C94D5030C94D5030C94D5030C94D503 OTA:FWP:FL DUMP 003A:0C94D5030C94D5030C94D5030C94D503127516
Lot more data is whriting to the flash.
And after the firmware is recieved:
127760 OTA:FWP:FW END 129652 OTA:CRC:B=04E0,C=3E27,F=3E27 129656 OTA:FWP:CRC OK
And the node reboots so OTA works!
And as a bonus
#define MY_OTA_FLASH_JDECID (0x1F65)
Works also so this can also be used as an red flag if your OTA is not working and you have the correct flash chip but get a FLASH INIT error.
I would like to thank everybody for helping!
@sundberg84 I would not move away from your great PCB design, but I might order some new ones.