diff --git a/README.md b/README.md
index aacdec9..81b650b 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,7 @@ set_perm_recursive <owner> <group> <dir_mode> <file_mode> <dir> [<dir2> ...]
 dump_boot
 split_boot
 unpack_ramdisk
+unpack_vendorrd <name|path>
 
 backup_file <file>
 restore_file <file>
@@ -89,7 +90,7 @@ prepend_file <file> <if search string> <patch file>
 insert_file <file> <if search string> <before|after> <line match string> <patch file>
 append_file <file> <if search string> <patch file>
 replace_file <file> <permissions> <patch file>
-patch_fstab <fstab file> <mount match name> <fs match type> block|mount|fstype|options|flags <original string> <replacement string>
+patch_fstab <fstab file> <mount match name> <fs match type> <block|mount|fstype|options|flags> <original string> <replacement string>
 patch_cmdline <cmdline entry name> <replacement string>
 patch_prop <prop file> <prop name> <new prop value>
 patch_ueventd <ueventd file> <device node> <permissions> <chown> <chgrp>
@@ -113,9 +114,9 @@ __"before|after"__ requires you simply specify __"before"__ or __"after"__ for t
 
 __"block|mount|fstype|options|flags"__ requires you specify which part (listed in order) of the fstab entry you want to check and alter.
 
-_dump_boot_ and _write_boot_ are the default method of unpacking/repacking, but for more granular control, or omitting ramdisk changes entirely ("OG AK" mode), these can be separated into _split_boot; unpack_ramdisk_ and _repack_ramdisk; flash_boot_ respectively. _flash_generic_ can be used to flash an image to the corresponding partition. It is automatically included for dtbo, system_dlkm and vendor_dlkm in _write_boot_ but can be called separately if using "OG AK" mode or creating a simple partition flashing only zip.
+_dump_boot_ and _write_boot_ are the default method of unpacking/repacking, but for more granular control, or omitting ramdisk changes entirely ("OG AK" mode), these can be separated into _split_boot; unpack_ramdisk_ (or _unpack_vendorrd_) and _repack_ramdisk; flash_boot_ respectively. _flash_generic_ can be used to flash an image to the corresponding partition. It is automatically included for dtbo, system_dlkm and vendor_dlkm in _write_boot_ but can be called separately if using "OG AK" mode or creating a simple partition flashing only zip.
 
-Multi-partition zips can be created by removing the ramdisk and patch folders from the zip and including instead "-files" folders named for the partition (without slot suffix), e.g. boot-files + recovery-files, or kernel-files + ramdisk-files (on some Treble devices). These then contain Image.gz, and ramdisk, patch, etc. subfolders for each partition. To setup for the next partition, simply set `BLOCK=` (without slot suffix) and `RAMDISK_COMPRESSION=` for the new target partition and use the _reset_ak_ command.
+Multi-partition zips can be created by removing the ramdisk and patch folders from the zip and including instead "-files" folders named for the partition (without slot suffix), e.g. boot-files + recovery-files, or kernel-files + ramdisk-files (on some Treble devices). These then contain Image.gz, and ramdisk (or vendor_ramdisk/<name> for vendor_boot v4 format), patch, etc. subfolders for each partition. To setup for the next partition, simply set `BLOCK=` (without slot suffix) and `RAMDISK_COMPRESSION=` for the new target partition and use the _reset_ak_ command.
 
 Similarly, multi-slot zips can be created with the normal zip layout for the active (current) slot, then resetting for the inactive slot by setting `BLOCK=` (without slot suffix) again, `SLOT_SELECT=inactive` and `RAMDISK_COMPRESSION=` for the target slot and using the _reset_ak keep_ command, which will retain the patch and any added ramdisk files for the next slot.
 
@@ -148,9 +149,9 @@ Optionally moving ARM builds to tools/arm and putting x86 builds in tools/x86 wi
 
 1. Place final kernel build product, e.g. Image.gz-dtb or zImage to name a couple, in the zip root (any separate dt, dtb or recovery_dtbo, dtbo, system_dlkm and/or vendor_dlkm should also go here for devices that require custom ones, each will fallback to the original if not included)
 
-2. Place any required ramdisk files in /ramdisk (/vendor_ramdisk for simple multi-partition vendor_boot v3 support) and module files in /modules (with the full path like /modules/system/lib/modules)
+2. Place any required ramdisk files in /ramdisk (/vendor_ramdisk for simple multi-partition vendor_boot v3 support, or /vendor_ramdisk/<name> for simple multi-partition vendor_kernel_boot v4 support) and module files in /modules (with the full path like /modules/system/lib/modules)
 
-3. Place any required patch files (generally partial files which go with AK3 file editing commands) in /patch (/vendor_patch for simple multi-partition vendor_boot v3 support)
+3. Place any required patch files (generally partial files which go with AK3 file editing commands) in /patch (/vendor_patch for simple multi-partition vendor_boot v3 or vendor_kernel_boot v4 support)
 
 4. Modify the anykernel.sh to add your kernel's name, boot partition location, permissions for any added ramdisk files, and use methods for any required ramdisk modifications (optionally, also place banner and/or version files in the root to have these displayed during flash)