Any combination of these patches can be applied before booting Other OS. NANDBIN (239mb or 256mb) Rename your converted DEX dump to DEX-FLASH. Takes less than 10secs once you have your dumps prepared.
DEX/CEX * SWAP LV2 KERNEL: Swaps between CEX and DEX LV2 Kernel. * EXPORT FLASH TO FILE: Backup your current NOR/NAND to file on dev_usb000.
* TOGGLE PRODUCT MODE: Enable/Disable Product Mode flag.
One final thing to note about Other OS on 4.21.1 is that it function is slightly reduced at the moment due to the fact that we are not able to map memory like in 3.55 and below. Hopefully this problem can be addressed without having to release another firmware.
An update to the system software for Play Station®Vita systems and Play Station®TV systems was released on April 18, 2017.
* DEBUG MENU TYPE: Gives you the choice of the CEX QA (retail) or DEX (debug) Debug Settings menu. NANDBIN (239mb or 256mb) Once you have prepared your NOR/NAND dumps place them on a USB device and connect it to dev_usb000.
* LV1 PATCHES A collection of LV1 patches that can be used for better compatibility with some PS3 tools. Now that you have your valid dumps named properly and connected to dev_usb000 it is a simple as selecting the option and following the onscreen prompts.
OTHEROS SUPPORT Other OS is supported by all REBUG REX EDITIONS and will detect your existing Other OS HDD partition.
However none of the REBUG REX EDITIONS have emer_patched (create smaller Game OS partition). In the meantime if you do want to create an Other OS partition you have two options: 1: Use a 3.55 firmware that already has emer_patched to the size you want.
REBUG mode sets the PS3 to the latest available version spoof (updatable in the future) and allows swapping between RETAIL and DEBUG XMB.
XMB OPERATION MODE: This option only works in REBUG mode and lets you select either the RETAIL or DEBUG XMB.
* EXPORT HYPERVISOR LV1 MEMORY: Save LV1 memory to dev_usb000 or dev_usb006 or dev_hdd0 if usb is not found.