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Adding a Mobile Phone to PS4 / PSN Account Video Guides
While we've covered the PS4 2-Step Verification quite some time ago, today Sony rolled out two video guides on adding a mobile phone to your PSN account both from the PS4 and from a Web browser for increased security (unless someone does a 2FA Bypass, SIM swap, SMS intercept without getting caught, exploit SIM Card flaws via SimJacker or simply remote desktop into telecom companies 
) and recovering your password should you ever need to.
Also below is a video from Sony on Software Engineering as part of their PlayStation Careers campaign for those considering a career in the field... it wouldn't be the first time someone got a job at $ony and then shared a bunch of 'insider goodies' with the scene despite signing their NDA papers.
How do add a mobile phone to my PSN account? (PS4)
How do add a mobile phone to my PSN account? (Web)
PlayStation Careers - Software Engineering
) and recovering your password should you ever need to.Also below is a video from Sony on Software Engineering as part of their PlayStation Careers campaign for those considering a career in the field... it wouldn't be the first time someone got a job at $ony and then shared a bunch of 'insider goodies' with the scene despite signing their NDA papers.
How do add a mobile phone to my PSN account? (PS4)
How do add a mobile phone to my PSN account? (Web)
PlayStation Careers - Software Engineering
Making Permanent PS4 Themes with Official PKG's Guide by Panzah1488
This is a guide from @Panzah1488 (tested by both @jwooh and @Broka) on how to make permanent PS4 Themes using official PKG files for those interested. 
Here's what you do if you want permanent PlayStation 4 Themes, or follow the updated Alternate Guide by Mangekyou222:
Make an unlock FPKG for the theme you want, it should be a standard 128 KB unlock FPKG (use Radziu's ez_fake_dlc.py script for that).
Say we use the PS2 theme like the Legacy Dashboard Theme on PlayStation Store I was looking for earlier, you just make an unlock FPKG for it like this one:
And here's where the real trick is- you DON'T use a dump of the theme, you use the OFFICIAL PKG of it.
Straight up official PKG of the theme and what you do with it is get both the official PKG and the unlock key FPKG on your pendrive, and then you install the unlock key FPKG one FIRST (this is very important) and THEN you install the official PKG of the theme.
It will actually work, its counted as if you bought it. I just did it for myself and it worked after full shutdown reboot. No rest mode involved whatsoever.
This method was first reported and confirmed working by @dark90 with a...
Here's what you do if you want permanent PlayStation 4 Themes, or follow the updated Alternate Guide by Mangekyou222:
Make an unlock FPKG for the theme you want, it should be a standard 128 KB unlock FPKG (use Radziu's ez_fake_dlc.py script for that).
Say we use the PS2 theme like the Legacy Dashboard Theme on PlayStation Store I was looking for earlier, you just make an unlock FPKG for it like this one:
And here's where the real trick is- you DON'T use a dump of the theme, you use the OFFICIAL PKG of it.Straight up official PKG of the theme and what you do with it is get both the official PKG and the unlock key FPKG on your pendrive, and then you install the unlock key FPKG one FIRST (this is very important) and THEN you install the official PKG of the theme.
It will actually work, its counted as if you bought it. I just did it for myself and it worked after full shutdown reboot. No rest mode involved whatsoever.
This method was first reported and confirmed working by @dark90 with a...
Access the PS4's Hard Drive (HDD) on 5.05 Guide by MODDEDWARFARE
This weekend @MODDEDWARFARE shared a video guide from his YouTube Channel via Twitter covering some handy things that can be accomplished with FTP on PS4 including how to add your own profile picture, edit your trophy summary, backup save games along with deleting and blocking updates on 5.05 jailbroken consoles. 
Since his PS4 Theme Creator guide, he's also recently detailed how to jailbreak a Nintendo Switch with free Custom Firmware (CFW) for everyone who owns one of those handheld video game consoles too.
What you can do with FTP on PS4
Since his PS4 Theme Creator guide, he's also recently detailed how to jailbreak a Nintendo Switch with free Custom Firmware (CFW) for everyone who owns one of those handheld video game consoles too.
What you can do with FTP on PS4
PS4 PKG Install from Internal HDD via FTP & BGFT Method by Flatz & PS5 Package Installation Writeup
PlayStation 4 scene developer @flatz is on fire lately, following his recent External HDD PS4 Patch, sys_dynlib_dlsym_ex.c and of course his famous Method to Handle PS4 Fake PKGs & SELF / FSELF Write-up today he shared a PS4 PKG installation guide from internal HDD via FTP with a bonus BGFT method! 
Stemming from Installing PS4 PKG Files Using a Function, below is his latest tutorial via Flatz.Github.io complete with the BGFT method bonus and related Tweets, to quote: PKG installation from internal HDD
Overview
A few years ago I’ve posted this tweet. You could use this method from your own code to install a specified package file using an official way which means that it will install all pkg-related files too such as nptitle.dat, npbind.dat, json files, icons, etc.
For example, you could copy .pkg file to /user/data/ directory using any FTP server and then install it from this folder. It means that you don’t need any USB drive to copy file there and install it from possibly a slow USB device.
And it looked very simple (at least I’ve thought that it was simple at that time).
To do that you need to change auth id inside struct ucred’s auth info to ShellCore’s one (0x3800000000000010) (see my PKG/PFS write-up for needed structure), then load and start an additional module: /system/common/lib/libSceAppInstUtil.sprx. See my gist for PRX related funcs.
Stemming from Installing PS4 PKG Files Using a Function, below is his latest tutorial via Flatz.Github.io complete with the BGFT method bonus and related Tweets, to quote: PKG installation from internal HDD
Overview
A few years ago I’ve posted this tweet. You could use this method from your own code to install a specified package file using an official way which means that it will install all pkg-related files too such as nptitle.dat, npbind.dat, json files, icons, etc.
For example, you could copy .pkg file to /user/data/ directory using any FTP server and then install it from this folder. It means that you don’t need any USB drive to copy file there and install it from possibly a slow USB device.
And it looked very simple (at least I’ve thought that it was simple at that time).
To do that you need to change auth id inside struct ucred’s auth info to ShellCore’s one (0x3800000000000010) (see my PKG/PFS write-up for needed structure), then load and start an additional module: /system/common/lib/libSceAppInstUtil.sprx. See my gist for PRX related funcs.
Code:
// ...
int (*sceAppInstUtilInitialize)(void);
int (*sceAppInstUtilAppInstallPkg)(const char* file_path, int reserved);
int (*sceAppInstUtilGetTitleIdFromPkg)(const char* pkg_path, char* title_id, int* is_app);
int (*sceAppInstUtilAppPrepareOverwritePkg)(const char* pkg_path);
int...
Using Original / Legit PS4 Game Saves with FPKG's Tutorial
Yesterday PlayStation 4 developers did some patch testing following a recent tutorial from magicbluemonkeydog on using original / legit PS4 game saves with FPKG's (Fake PKG games) with details below. 
To quote from magicbluemonkeydog via Reddit: You CAN Use Legit Saves with FPKG Fames Tutorial
1. Dump your original game and package normally BUT make sure to select the option to allow the pkg to be modifiable.
2. Write the original keystone from your dump into the pkg like so:
3. Load up your game and rejoice as your saves work with the newly installed fpkg.
You'll want to write the keystone from your disc dump into the Complete Edition fpkg then. If the CE version you have isn't modifiable, just extract it and rebuild it with the modify option. Depending on the CUSA version, you might need to edit your save database as well, there's a post in this subreddit detailing how to do that.
I'd use the PS4 Package Viewer by LMAN to extract the complete edition. From there, it's just like building an fpkg from a regular dump, but with the mod_pkg flag set (it's an option when pressing build).
Ask someone nicely who has the original keystone file to upload it for you. Or borrow/rent the disc. The legit, non fake PKG file will still be on your PS4 if you haven't deleted the game install but without the passcode you won't be able to extract the keystone file from it.
Updates don't have keystones, at least not the ones I've looked at. Makes sense, you wouldn't want to change the keystone and invalidate legitimate saves when updating. You can use pkg viewer to check though.
Every PS4 game has a keystone file which is generated based off of the passcode used when creating the game package. This keystone file is used to identify a save as belonging to that game. As fpkgs use all 0's for the passcode, the keystone file...
To quote from magicbluemonkeydog via Reddit: You CAN Use Legit Saves with FPKG Fames Tutorial
1. Dump your original game and package normally BUT make sure to select the option to allow the pkg to be modifiable.
2. Write the original keystone from your dump into the pkg like so:
Code:
orbis-pub-cmd.exe pkg_file_add --passcode 00000000000000000000000000000000 --force G:\Games\PS4\CUSA00074-app\sce_sys\keystone sce_sys/keystone G:\Games\PS4\EP0001-CUSA00074_00-CHILDOFLIGHT0001-A0100-V0103.pkg3. Load up your game and rejoice as your saves work with the newly installed fpkg.
You'll want to write the keystone from your disc dump into the Complete Edition fpkg then. If the CE version you have isn't modifiable, just extract it and rebuild it with the modify option. Depending on the CUSA version, you might need to edit your save database as well, there's a post in this subreddit detailing how to do that.
I'd use the PS4 Package Viewer by LMAN to extract the complete edition. From there, it's just like building an fpkg from a regular dump, but with the mod_pkg flag set (it's an option when pressing build).
Ask someone nicely who has the original keystone file to upload it for you. Or borrow/rent the disc. The legit, non fake PKG file will still be on your PS4 if you haven't deleted the game install but without the passcode you won't be able to extract the keystone file from it.
Updates don't have keystones, at least not the ones I've looked at. Makes sense, you wouldn't want to change the keystone and invalidate legitimate saves when updating. You can use pkg viewer to check though.
Every PS4 game has a keystone file which is generated based off of the passcode used when creating the game package. This keystone file is used to identify a save as belonging to that game. As fpkgs use all 0's for the passcode, the keystone file...