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 simply changed the ps4-updatelist.xml to pretend that a 1.76 is downloaded. The size of the download is identical to the update 4.06
Thanks to @mota, @Nesterwork and @xxmcvapourxx for the heads-up in the PSXHAX Shoutbox!