diff --git a/Dockerfile b/Dockerfile
index eadc196..9eb060c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -275,6 +275,23 @@ ENV HEIGHT=1080
 ENV LIBGUESTFS_DEBUG=1
 ENV LIBGUESTFS_TRACE=1
 
+# ### FIX LIBGUESTFS
+# # downgrade file command for supermin sub environment
+# RUN sudo pacman -Syyu \
+#     && sudo pacman -R libguestfs \
+#     && sudo pacman -U https://archive.archlinux.org/packages/f/file/file-5.39-1-x86_64.pkg.tar.zst \
+#     && git clone https://aur.archlinux.org/libguestfs-dev.git \
+#     && cd libguestfs-dev \
+#     && makepkg -si --syncdeps --noconfirm || exit 1
+# ### FIX LIBGUESTFS
+
+### FIX glibc & file
+RUN yes | sudo pacman -U https://archive.archlinux.org/packages/f/file/file-5.39-1-x86_64.pkg.tar.zst \
+    && patched_glibc=glibc-linux4-2.33-4-x86_64.pkg.tar.zst \
+    && curl -LO "https://raw.githubusercontent.com/sickcodes/Docker-OSX/master/${patched_glibc}" \
+    && sudo bsdtar -C / -xvf "${patched_glibc}" || echo "Everything is fine."
+### FIX glibc & file
+
 VOLUME ["/tmp/.X11-unix"]
 
 # check if /image is a disk image or a directory. This allows you to optionally use -v disk.img:/image
diff --git a/README.md b/README.md
index 06c3913..7a53eb1 100644
--- a/README.md
+++ b/README.md
@@ -44,8 +44,6 @@ docker run -it \
     -p 50922:10022 \
     -v /tmp/.X11-unix:/tmp/.X11-unix \
     -e "DISPLAY=${DISPLAY:-:0.0}" \
-    -e GENERATE_UNIQUE=true \
-    -e MASTER_PLIST_URL=https://raw.githubusercontent.com/sickcodes/osx-serial-generator/master/config-custom.plist \
     sickcodes/docker-osx:big-sur
 ```
 
@@ -60,20 +58,7 @@ SEE commands in [https://github.com/sickcodes/osx-optimizer](https://github.com/
 
 ## Important notices:
 
-**2021-05-04:** Big Sur requires an updated OpenCore.qcow2 image, simply add:
-
-```
-# this will not be required after OSX-KVM integrates the changes. No effect if you were already using this method.
-    -e GENERATE_UNIQUE=true \
-    -e MASTER_PLIST_URL=https://raw.githubusercontent.com/sickcodes/osx-serial-generator/master/config-custom.plist \
-```
-
-**2021-05-08:** QEMU 6 VNC changes:
-
-For Docker-OSX users who are using [VNC over QEMU using](#building-a-headless-container-which-allows-insecure-vnc-on-localhost-for-local-use-only) `-e EXTRA=...`
-
-- `password` is now `password=on`
-- `change vnc password` now need a username at the end, `change vnc password someuser`
+**2021-07-27:**  Bug in libguestfs currently preventing `GENERATE_UNIQUE` and `GENERATE_TRUE`
 
 ## Technical details