Preferred media players (like Kodi or VLC) are placed directly into the /system/app/ directory to make them permanent system apps.
The original tpsk706spc822 firmware usually arrives as a single monolithic binary or an archive containing multiple partition images (e.g., system.img , boot.img , vendor.img ). Move the firmware file to your working directory in Linux:
Custom Firmware Modification: A Deep Dive into the TPSK706SPC822 Firmware Repack