Hello @GRV
Regarding DBFS, there is no official update on enabling full access in the Free Edition. Also, DBFS is now considered a legacy approach, and you would need to use Unity Catalog Volumes for storing and accessing data going forward is recommended.
Example upload to UC Volume:
1. Go to the catalog you wanna have the data in, and click create Volume

2. Give it a name and click create:

3. Then use the "Upload to this volume" button to upload the data:

4. Here it is an example how to read a csv file from Volume:
df = spark.read.csv("/Volumes/main/finance/reports/monthly/may2025.csv", header=True, inferSchema=True)
df.show()
Hope that helps. Best, Ilir