请问XC2S600E-6FG4561在1133之后的日期代码中发现重复故障是怎么回事？

我目前在编程期间遇到了本地化到FPGA BGA（XC2S600E-6FG4561）的问题。
我正在编程的单元有两个FPGA BGA，当编程地址64处的两个bga失败验证时。确切的失败是：
U2未通过地址64'1'验证
U3未通过地址64'3'验证
这种情况发生在日期代码为1133或更高的所有BGA上，所有日期代码低于1133（确切日期代码1121,1021,0949,0845）都没有验证问题。
出于好奇，我试图在验证步骤中对BGA进行编程并进行校验和ID检查，并注意到每次使用1133（或更高版本）日期代码擦除和重新编程BGA时，校验和会发生变化，但是
早期的日期代码校验和是稳定的。
我不是软件人，我正在努力帮助解决这些问题。
所以，如果你有任何建议，我们表示赞赏。



以下为原文

I currently having an issue that has been localized to the FPGA BGA (XC2S600E-6FG4561) during programming .  The Unit I am programming has two FPGA BGA's and when programming both bga's fail verification at Address 64.  The exact fails are:
U2 fails verification at address 64'1'
U3 fails verification at address 64'3'
This is happening on all BGA's that have a date code of 1133 or higher, all date codes lower than 1133 (exact date codes 1121,1021,0949,0845) have no issue with verification.
Out of curiosity I tried to program the BGA's with out the verification step and do a checksum id check, and noticed that the checksum would change every time I would erase and reprogram  the BGA's with the 1133 (or higher)date code, but with the earlier date codes the checksum was stable.
I am not a software guy, I am trying to help troubleshoot these problems.  So if you have any advise It is appreciated.