最佳答案
网站有附下载地址
htTPs://suPPORT.industry.siemens.com/tf/WW/en/posts/step-7-v5-5-sp4-hf11/155648?page=0&pageSize=10
https://support.industry.siemens.com/cs/#document/109737984/hotfix-11-download-for-step-7-v5-5-sp4-and-step-7-professional-2010-sr4?dti=0&lc=en-WW
提问者对于答案的评价：
谢谢！升级包下载了。但安装时提示要先装STEP7V5.5SP4HF1CHINESE,但我电脑已经装了STEP7V5.5SP4HF1CHINESE。何解？？
