Advice Request Question about iphone nvme

[Tayeb_am]

Hello bro. I have traced comunication data between cpu and nand on prototype iphone 8 using the teledyne lecroy pcie analysis. And I have collected a hug data about 500mb. I built a pcie interface using widora bit to communicate with nand. Now I can read and erase from nand but I can't write syscfg
Do you have any idea