PS3 Installing Cobra 8.3 on REBUG 4.84.2 REX

[cool-username]

Hey guys! I would like to install Cobra 8.3 on Rebug 4.84.2 REX, and I'm not quite sure how to go about it. I was hoping someone smarter than me could help haha!

There is a version of Cobra 8.3 for Rebug 4.84 REX on Github:
http://github.com/Evilnat/Cobra-PS3/tree/master/8.3/4.84/REBUG/REX

And according to the release page, Rebug Toolbox Multi v02.03.07 does support Cobra 8.3 (at least on 4.88):
http://store.brewology.com/ahomebrew.php?brewid=308


To install, do I simply:

• Unpack the Rebug .PUP using PUAD
• Replace the following files:

/update_files/dev_flash/rebug/cobra/stage2.cex
/update_files/dev_flash/rebug/cobra/stage2.dex
/update_files/dev_flash/ps2emu/ps2*
/update_files/CORE_OS_PACKAGE/lv2Dkernel.self
/update_files/dev_flash/rebug/packages/REBUG_TOOLBOX_MULTI.pkg​

• Then repack using PUAD

I've already unpacked the PUP, but I can't seem to find lv2Ckernal.self, payload.cex.bin, or payload.dex.bin (Perhaps I unpacked with the wrong settings?). Where do I place these files?
Thanks in advance for the help! I am still fairly new to PS3 CFW, so I apologize if this is a stupid question.