Management of SD_MMC in command: Firebase.Storage.upload

[biggiu]

Hello and congratulations for all your work which I find exciting and really well done.
You are probably aware of the problems encountered when using SPIFFS and LittleFS to store photos captured via the ESP32-CAM on the SD-CARD. At least that's what happens to me.
Now I found your example: ESP32-CAM-Take-Photo-Date-Time-MicroSD-Card.
It works great and using SD_MMC I solved the problem of saving images. Now I would like to use SD_MMC for Firebase.Storage.upload too. I read that you need to modify the FirebaseFS.h library.
I'm not capable of it. Could you kindly help me out and provide me with the modified library?
In this way I would be able to complete my project which I was able to realize thanks to your work.
Thanks for the kind cooperation.