有基于DOS的ESG升级软件吗

我正在寻找基于DOS的软件来升级固件低于B.03.20的ESG发生器中的固件，如文档E4400-90549中所述。
有没有人有这个软件或知道我在哪里可以找到它？
看起来它包含名为dl_com1.bat和DLSERIAL.BAT的文件谢谢



     以下为原文

  I'm looking for the DOS based software to upgrade firmware in ESG generators with firmware less than B.03.20 as mentioned in the document E4400-90549.

Does anyone have this software or know where I could find it?

It looks like it would contain files named dl_com1.bat and DLSERIAL.BAT


thanks