Sony produced two major revisions of the Dev Kit top loader:
"PS3 4.91" refers to the system firmware update for the PlayStation 3 released by Sony in early 2024. While primarily a maintenance update, it is a significant topic for the retro gaming and homebrew communities because it directly impacts system security, Blu-ray playback, and existing jailbreak modifications. Core Purpose of Update 4.91 Sony officially describes the 4.91 update as a way to improve system performance ps3 491 top
Do not confuse "PS3 491 top" with "PS3 491 CFW" (Custom Firmware). There is no such thing as "491 CFW." That is a typo for "4.91 CFW" (Custom Firmware version 4.91), which is software, not hardware. If you need to run backup games, install Evilnat 4.91.2 Cobra —but that won't require a 491 top bracket at all. Sony produced two major revisions of the Dev
Available for compatible "Fat" and early "Slim" models (Series 20xx/21xx and some 25xx) using tools like Evilnat 4.91 . There is no such thing as "491 CFW