philips-tv-speicher-voll/recovery/FULL-FIRMWARE-RECOVERY.md

Full firmware recovery plan

Acquisition

Request from Philips/TPVision:

1. full, not merely incremental, USB firmware for 43PUS7394/12 and TPM191E_R;
2. current or explicitly upgrade/downgrade-compatible release;
3. SHA-256 and signed publication/release note;
4. model-specific cold-boot/emergency installation instructions;
5. clarification whether user settings/data are preserved;
6. boot-slot recovery and failure/power-loss behavior.

Offline validation before use

• hash/provenance and exact filename;
• ZIP/UPG structure, upg.xml product ID and source/target versions;
• payload partition list and properties;
• no modification, repacking or third-party wrapper;
• sufficient, stable power and known expected duration.

Execution gate

A full firmware action writes many boot-critical partitions and may erase data. It requires a new explicit authorization and a final preflight. Do not start it merely because Android UI is slow; first distinguish app-update rollback from a true boot/system-image failure.

Post-recovery verification

Check build/fingerprint, active slot, locked/green AVB, hashes, /data capacity, TV setup, tuner/channels, Guide, favorites, recordings/reminders, network, HDMI/CEC, sound, standby/wake and whether the original bug is present.