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PS4 Firmware / System Software Permanent Version Spoof by Zecoxao
Following his Decrypting and Dumping PS4 Games guide, PlayStation 4 developer @zecoxao recently Tweeted a picture of a memory edit which tricks the PS4 into thinking it's on PS4 System Software 9.90 (spoofed) permanently so it won't nag to be updated any longer since PSProxy isn't working again. 
Recently we've seen PlayStation 4 developers demonstrating PS4 game mods through Peek & Poke kernel modifications, and with a PS4 1.76 Permanent Internet Browser Mod already available here's to hoping a payload for the Firmware Version will follow suit!
Also regarding the CE-32875-5 PSProxy error, VVildCard777 shared the following:
To quote: "For those with the dreaded CE-32875-5... try base + 0x462509 of sceShellCore write 1 byte of 0x00... end of nightmares.
Well you need code that can read and write to userland mem.. Not my place to give out, keep an eye out for a future release."
Download: Playground+ShelCore Patch.rar (8.2 MB)
To quote from e✘treme via Hydrogen, roughly translated: PS4...
Recently we've seen PlayStation 4 developers demonstrating PS4 game mods through Peek & Poke kernel modifications, and with a PS4 1.76 Permanent Internet Browser Mod already available here's to hoping a payload for the Firmware Version will follow suit!
Also regarding the CE-32875-5 PSProxy error, VVildCard777 shared the following:
To quote: "For those with the dreaded CE-32875-5... try base + 0x462509 of sceShellCore write 1 byte of 0x00... end of nightmares.
Well you need code that can read and write to userland mem.. Not my place to give out, keep an eye out for a future release."
Download: Playground+ShelCore Patch.rar (8.2 MB)
To quote from e✘treme via Hydrogen, roughly translated: PS4...
Russian PS4 Debug Settings and Installing PlayStation 4 PKG Files
This Russian PS4 demonstration VRParty video first surfaced from Ilya Maddyson of #MadPictures back on November 6, 2016 before their YouTube account was closed due to infringement, but now @ArthurBishop let us know in the PSXHAX Shoutbox it's been reposted yesterday and can be seen below. 
It's unclear if the console is another PS4 DevKit Running Backup Games or if it's a retail unit using PS4 Debug Mode, one of the old PlayStation 4 Russian Jailbreak / Unlocking the PS4 NOR Chip / PS4 Flash Dumping / Unlocking Method / PS4 GameSharing tricks or by making use of PS4 Functions.
Anyhoo, some related links are below alongside the PS4 Russian PS4 demo video for those interested!
Related PlayStation 4 Package (PKG) file guides / tutorials / tools:
It's unclear if the console is another PS4 DevKit Running Backup Games or if it's a retail unit using PS4 Debug Mode, one of the old PlayStation 4 Russian Jailbreak / Unlocking the PS4 NOR Chip / PS4 Flash Dumping / Unlocking Method / PS4 GameSharing tricks or by making use of PS4 Functions.
Anyhoo, some related links are below alongside the PS4 Russian PS4 demo video for those interested!
Related PlayStation 4 Package (PKG) file guides / tutorials / tools:
PS4 Pro Pwnd by PlayStation 4 Devs via 0Day Exploit, Don't Update
If you're standing outside in some long and cold Black Friday line today this is just for you- following the earlier news, today @harryoke confirmed on Twitter that PlayStation 4 developers have pwnd the PS4 Pro which currently ships sporting PS4 3.70 OFW with a 0day exploit! 
He also mentioned if you're getting a PS4 Pro for the holidays NOT to update it past the stock 3.70 version Firmware it comes with, which makes sense as @flatz recently confirmed the 4.01 PS4 Jailbreak vulnerability by Chaitin Tech was patched... and Rebug developer @evilsperm tweeted he's looking to unload some of his PS3 and PS Vita stuff and get a PS4 Pro.
Should scene developers release anything that makes use of the exploit now that it's been patched, you'll definitely want to stay under 4.06, and snarfing a PlayStation 4 Pro on 3.70 is an easy shot at the chance of PS4 homebrew and backup game loaders including PS4 Rebug CFW / multiMAN if / when they surface.
One more (unrelated) video from Chipwelt, to quote roughly translated: PS4 3.70 download the update 1.76. It is a video that reveals a FAKE.
On the PS4 you can only download the latest update, currently the 4.06. It was...
He also mentioned if you're getting a PS4 Pro for the holidays NOT to update it past the stock 3.70 version Firmware it comes with, which makes sense as @flatz recently confirmed the 4.01 PS4 Jailbreak vulnerability by Chaitin Tech was patched... and Rebug developer @evilsperm tweeted he's looking to unload some of his PS3 and PS Vita stuff and get a PS4 Pro.
Should scene developers release anything that makes use of the exploit now that it's been patched, you'll definitely want to stay under 4.06, and snarfing a PlayStation 4 Pro on 3.70 is an easy shot at the chance of PS4 homebrew and backup game loaders including PS4 Rebug CFW / multiMAN if / when they surface.
One more (unrelated) video from Chipwelt, to quote roughly translated: PS4 3.70 download the update 1.76. It is a video that reveals a FAKE.
On the PS4 you can only download the latest update, currently the 4.06. It was...
PS4 3.55 Syscall Fun from Specter, Yifan Lu on TaiHEN Feasibility
Following his previous update, PlayStation 4 developer @SpecterDev tweeted that he's currently having System Call fun through reverse-engineering the PS4, and when asked by @kazookid0 which Firmware he was running he confirmed 3.55 in the Shoutbox which is always GREAT to hear as he did develop the PS4 Playground for Firmware 3.55!
In related PS4 hacking news @bodeg spotted THIS reply from developer Yifan Lu which touches upon the feasibility of PS4 support for taiHEN- the Custom Firmware Framework that supports Adrenaline 6.61 PSPemu CFW on PS Vita... here's what he had to say, to quote:
"This one is unlikely to be taken on by me. The PS4's kernel APIs should be close enough (have same/similar functions) where a port of taiHEN to PS4 would be easier than, say, Android. substitute supports x86-64 as well.
For anyone interested, to start, they should try to build taihen without linking to the stubs. GCC will then complain about undefined symbols. See if you can find those functions in the PS4 kernel. My suspicions is that you can find most of them (and we don't use that many kernel apis)."
Sony must be pulling their hair out lately, from the recent PS3 Hacks through Native PS4 Calls to PS4Link Peek & Poke support.
Thanks to...
In related PS4 hacking news @bodeg spotted THIS reply from developer Yifan Lu which touches upon the feasibility of PS4 support for taiHEN- the Custom Firmware Framework that supports Adrenaline 6.61 PSPemu CFW on PS Vita... here's what he had to say, to quote:
"This one is unlikely to be taken on by me. The PS4's kernel APIs should be close enough (have same/similar functions) where a port of taiHEN to PS4 would be easier than, say, Android. substitute supports x86-64 as well.
For anyone interested, to start, they should try to build taihen without linking to the stubs. GCC will then complain about undefined symbols. See if you can find those functions in the PS4 kernel. My suspicions is that you can find most of them (and we don't use that many kernel apis)."
Sony must be pulling their hair out lately, from the recent PS3 Hacks through Native PS4 Calls to PS4Link Peek & Poke support.
Thanks to...
PS4 Developer Specter on Pegasus / Trident / Chaitin Tech Exploit
Many may recall the Pegasus Exploits on iOS PDF that was making rounds last week, well... today PlayStation 4 developer @SpecterDev shared his research findings on the Pegasus / Trident exploit in relation to the PS4 Chaitin Tech Exploit. 
You can read the entire article on Specter's Development Blog with a closing excerpt below to quote:
"For 1.76, all of these steps were achieved. For 3.55, essentially all that's been done is step one. Now if the kernel exploit in Pegasus wasn't used in the jailbreak for firmwares > 1.76, what was? We don't know.
It's currently being held private, and Chatin did not disclose the vulnerability to the public, only exclusively to Sony. If one thing is for sure though, it's that the kernel exploit was assuredly burned in 4.06. I am however, unsure if the Pegasus webkit exploit was fixed or used in the jailbreak, however it's more than likely fixed as well."
Here are some related Tweets from SpecterDev and others on Twitter as well:
Thanks to @defense, @kazookid0 and @mcmrc1 for the news in the PSXHAX Shoutbox!
You can read the entire article on Specter's Development Blog with a closing excerpt below to quote:
"For 1.76, all of these steps were achieved. For 3.55, essentially all that's been done is step one. Now if the kernel exploit in Pegasus wasn't used in the jailbreak for firmwares > 1.76, what was? We don't know.
It's currently being held private, and Chatin did not disclose the vulnerability to the public, only exclusively to Sony. If one thing is for sure though, it's that the kernel exploit was assuredly burned in 4.06. I am however, unsure if the Pegasus webkit exploit was fixed or used in the jailbreak, however it's more than likely fixed as well."
Here are some related Tweets from SpecterDev and others on Twitter as well:
Thanks to @defense, @kazookid0 and @mcmrc1 for the news in the PSXHAX Shoutbox!