Dear support Team,
I have problems using the “Upload Filesystem image” for esp32, but why.
It is directly installed before!?!
Any Hints?
It seems the installation does not work, because each build will install the tool-mklittlefs???
There is no “support-team”. This is a user forum 
Your question is pioarduino related. The best way to get help for pioarduino related question is to ask on pioarduino’s discord server.
Jason2866 (the maintainer of pioarduino) wrote this yesterday on pioarduino’s discord server:
Jason2866 — Yesterday at 2:37 PM
With release of Arduino core 3.3.6 the pioarduino way of building FS images under the hood has completly changed.
There is no APP OS dependent binary used anymore (“MKFSTOOL”) all this OS dependent binaries for LittleFS, SPIFFS and FAT have been replaced by Python modules which are integrated in the pioarduino Platform!
Furthermore a new pioarduino Menu entry has been added “Download Filesystem image and extract files”.
By connecting any esp32x an existing Filesystem will be found via the partition table entry read form the device.
The Filesystem image will be downloaded, the FS detected and all files extracted. No manual work or thinking needed of anything. It just works
