If you do not have a PC to edit config.txt , the latest includes an "Auto-Update" feature:
Most PKGi failures stem from missing configuration files or improper system activation. Use these specific solutions to resolve them. pkgi ps3 fix exclusive
Disclaimer: This guide requires a jailbroken PS3 (CFW) or a PS3 running HEN. Modifying your console carries inherent risks. Proceed at your own risk. If you do not have a PC to edit config