If you are looking for the latest Android version (e.g., Android 13/14 AOSP): Be very careful. Check the thread comments on XDA to see if users are reporting bugs with the LTE radio or Camera before installing.
Download your preferred ROM (e.g., LineageOS GSI or Pixel Experience GSI) and extract the .img file from the compressed archive ( .zip or .xz ). Step 5: Flashing the Custom ROM via FastbootD
Before you begin, it is vital to understand that modifying your tablet's software comes with risks:
Open on your Windows PC. The ID:COM box should turn blue, indicating your tablet is connected.
The road to a custom ROM on the SM-X200 involves three main phases: