Tp-link Archer C5 V4 Firmware Upgrade

Q: Can I downgrade the firmware to a previous version? A: It is not recommended to downgrade the firmware to a previous version, as it may cause compatibility issues and security vulnerabilities.

If you are looking for a "paper" in the academic or security sense, this is the most relevant topic. The Archer C5 v4 has been the subject of security research regarding firmware vulnerabilities. tp-link archer c5 v4 firmware upgrade