can not Install Packages.

Hello, all.

I need help.

I bought old PS3 for my son. Unfortunately, in menu I even do not have Install Package Files option.
Sticker at the backside has CECH-2001A.
Minimal version checker from this site told me that:
Update data of version 2.70 or later can be installed on this system. id 8002F967.

And now the question is: what custom firmware can I use to get the ability to install the programs from usb-flash and avoid brick console?