Small Version: Update from 3.2.3. to 3.2.8

Today I tried to change the Software-Vers. 3.2.3 to 3.2.8. for Heishamon for my Panasonic-L-5 kWth-R290.
I got 2 times a mistake FEHLER (7) information after uploading, either I used the MD5-checksum, which I verified with WinMD5free.

What could be the problem ?

Thank you for your assistance.

LG

Karl

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