I get error 8002F957 on 71% of update on CECHG04.
Any help??
0x8002F957 = Error with installing Firmware update. The data is corrupted (firmware in flash does not allow the MFW installation as it does not contain the needed patches)
You need to patch the console using ** www.** ** www.ps3xploit.net > D... (NEW URL = http://ps3toolset.com)/bgtoolset/ from the console's PS3 Internet browser.
Follow this guide::
https://www.psx-place.com/threads/guide-jailbreaking-with-bgtoolset.33461/
If you're already on OFW 4.89, you'll have to wait until bgtoolset is updated to support 4.89.
It currently supports FW versions between 4.80 and 4.89. Meanwhile you can install HFW 4.89 and HEN 3.1.1.
In that case, follow this tutorial: https://www.psx-place.com/threads/auto-hen-installer-updated-for-4-89.34304/