Following the 7.50 PS4 Kernel Exploit (KEX) that was confirmed working with 7.51 and 7.55 OFW alongside updates to both AutoBackPort v1.11 and PlayStation 4 Tool Box v2.1.7.30, today @sleirsgoevy (Twitter) implemented @Al Azif's (Twitter) dynlib_dlsym patch earlier noting it does not seem to fix payloads while recommending scene devs remove line 525 in jb.c (included in the Depreciated .zip below) and recompile to fix the crash when forking webkit. 
Download: ps4jb-755-2.zip (498 KB) / PS4JB 6.72 Live Demo / PS4JB 7.02 Live Demo / PS4JB 7.5X (7.50-7.55) Live Demo / GIT / PS4 Exploit Hosting Tutorial / PS4 Exploit Hosting Video Guides / Android PS4 Exploit Host / xPloitServer Host / Mira_Orbis_MIRA_PLATFORM_ORBIS_BSD_755.elf and MiraLoader_Orbis_MIRA_PLATFORM_ORBIS_BSD_755.bin (Mira for 7.55) / build.7z (48.12 KB - Payloads: Send Mira loader first to port 9020 then payload to 9021 via PlayStation 4 Tool Box v2 or PS4 ELF / Payload Injector) / build.7z (Mirror) / 7.55.rar (202.1 MB - 7.55 dumped kernel and modules) / PS4 Game Firmware Lists / 7.55 PS4 Games List / PS4 Official Firmware (OFW) Archives / Linux Loader 7.55 / PS4JB Payloads
Spoiler: Depreciated

To those having issues self hosting add ./ to the JS links at the bottom of the exploit html so like this:
Download: ps4jb-755-2.zip (498 KB) / PS4JB 6.72 Live Demo / PS4JB 7.02 Live Demo / PS4JB 7.5X (7.50-7.55) Live Demo / GIT / PS4 Exploit Hosting Tutorial / PS4 Exploit Hosting Video Guides / Android PS4 Exploit Host / xPloitServer Host / Mira_Orbis_MIRA_PLATFORM_ORBIS_BSD_755.elf and MiraLoader_Orbis_MIRA_PLATFORM_ORBIS_BSD_755.bin (Mira for 7.55) / build.7z (48.12 KB - Payloads: Send Mira loader first to port 9020 then payload to 9021 via PlayStation 4 Tool Box v2 or PS4 ELF / Payload Injector) / build.7z (Mirror) / 7.55.rar (202.1 MB - 7.55 dumped kernel and modules) / PS4 Game Firmware Lists / 7.55 PS4 Games List / PS4 Official Firmware (OFW) Archives / Linux Loader 7.55 / PS4JB Payloads
Spoiler: Depreciated
- PS4-Xplorer 1.29 Lapy.rar (62.4 MB - 7.50 / 7.51 / 7.55) by Lapy05575948
- ED1234-LAPY20001_00-0000000000000000-A0100-V0129.pkg (Eliminates need to use firmware selection screen) / GIT via The Darkprogramer
- PS4 Temperature 1.04.rar (45.6 MB - 7.50 / 7.51 / 7.55) by Lapy05575948
- Easy PKG Extractor 1.07 - Lapy.rar (50.4 MB - 7.50 / 7.51 / 7.55) by Lapy05575948
- PS4 App Lock 1.05 - Lapy.rar (48.7 MB - 7.50 / 7.51 / 7.55) by Lapy05575948
- mira-binaries-750.zip (120 KB - Mira for 7.50 - includes Mira_Orbis_MIRA_PLATFORM_ORBIS_BSD_750.elf and MiraLoader_Orbis_MIRA_PLATFORM_ORBIS_BSD_750.bin) / GIT fork by LightningMods_ via Pastebin.com:
Code:// Backported / Changelog by LM // 3/16/2020 "old" referring to the 7.55 offset //kernel #define kdlsym_addr_mountpfs__sceSblPfsSetKeys_hookA 0x006D9727 // old 0x006D9757 #define kdlsym_addr_mountpfs__sceSblPfsSetKeys_hookB 0x006D9958 // old 0x006D9988 // flatz disable pfs signature check kmem = (uint8_t *)&gKernelBase[0x006DD970]; // old 0x006DD9A0 kmem[0] = 0x31; kmem[1] = 0xC0; kmem[2] = 0xC3; ------------------------------------------------------ //shellcore #define ssc_sceKernelIsGenuineCEX_patchB 0x007FBF70 //old 0x007FBF00 #define ssc_sceKernelIsGenuineCEX_patchC 0x0084AFB2 // old 0x0084AF42 #define ssc_sceKernelIsGenuineCEX_patchD 0x009D31D0 // old 0x009D3150 #define ssc_nidf_libSceDipsw_patchB 0x003CBB38 // old 0x00316BD3 #define ssc_nidf_libSceDipsw_patchC 0x007FBF9A // old 0x007FBF2A #define ssc_nidf_libSceDipsw_patchD 0x009D31FA // old 0x009D317A #define ssc_fake_to_free_patch 0x00F66891 // old 0x00F66831 #define ssc_enable_vr_patch 0x00D57EE0 // old 0x00D57E60 #define ssc_external_hdd_pkg_installer_patch 0x009BC1C1 // old 0x009BC141
- 751-mira.zip (119 KB - Mira for 7.51 - includes Mira_Orbis_MIRA_PLATFORM_ORBIS_BSD_751.elf and MiraLoader_Orbis_MIRA_PLATFORM_ORBIS_BSD_751.bin) / GIT fork by LightningMods_ via Github.com.
- perma-7.5x-uart.bin (149 Bytes - PS4 7.5X Perma UART Payload) via LightningMods_

To those having issues self hosting add ./ to the JS links at the bottom of the exploit html so like this:
Code:
<script src="./webkit-7.50/external/utils.js">