Pcie error on d02

hi

Our TX2 module has always used the development board designed by ourselves（Interact with K7 FPGA through PCIe）. Due to the large amount, we have always used the mirror system to brush the machine(system is R28.1).now,We have purchased a new batch of TX2 modules with the number of D02，When using the mirror brush, it will fail，The version of the mirror system is R28.1.

Later, I learned about the documentsPCN206440，I used r28.2.1 to re mirror the system with the overlay，it can brush successfully.but the modification of PCIe mapping by the original system kernel is not mirrored in the new module.

The R28.1 kernel is modified as follows:



After this batch of D02 modules are burned, PCIe reads data incorrectly.This folder will be deleted after the previous module is burned, but the current(D02 )module does not.

    Why can the same image system change the kernel in the previous modules by brushing, but the new batch of D02 is not.