diff --git a/firmware_sammelbecken.md b/firmware_sammelbecken.md
index 04e67a8..b535b26 100644
--- a/firmware_sammelbecken.md
+++ b/firmware_sammelbecken.md
@@ -136,4 +136,11 @@ Booting rom 0 (0x8000).
 V2
 Mo
 Backup
-```
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+```
+#### MateView
+`Bus 001 Device 018: ID 12d1:10b5 Huawei Technologies Co., Ltd. MateView`
+    1. Connect the Windows host to the monitor using a USB-C to USB-C cable or an HDMI/DP+ USB-A to USB-C cable (with the USB-C end connected to the monitor and the USB-A end connected to the host). After the screen is cast normally, right-click the  icon in the lower right corner of the desktop, select Open Sound settings to enter the sound settings screen, and then select Microphone (MateView GT) under Choose your input device.
+    2. Download the MateView GT HwMateViewGT-CAA Audio Firmware 1.0.zip at https://consumer.huawei.com/my/support/monitors/mateview-gt/
+    3. To download the firmware update tool, may visit https://drive.google.com/drive/folders/1j5reoECesfaabvKl_GtARPwlVXf6fLoB
+    4. Place the decompressed HwMateViewGT-CAA Audio Firmware 1.0.fwu and the update tool SophiaFwUpd.exe in the same folder. Double-click MateViewGT_Update.bat in the folder to start updating the firmware. Alternatively, press Shift while right-clicking the folder to open the Powershell window. In the displayed Powershell window, run .\SophiaFwUpd.exe -i ‘.\HwMateViewGT-CAA Audio Firmware 1.0.fwu’ -v 0x12d1 –p 0x10b6 and press Enter to start updating the firmware. During the update, do not remove the power cable or signal cable and keep the monitor in projection mode.
+    5. The message "Firmware update SUCC." will be displayed after the execution is complete. The message "Please restart monitor." indicates that the audio firmware update is successful. Restart the monitor and try again.
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diff --git a/git_usage.md b/git_usage.md
index 905d090..831701e 100644
--- a/git_usage.md
+++ b/git_usage.md
@@ -1,4 +1,8 @@
 ## git
 
 ### git file permission ignore
-`git config core.fileMode false`
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+`git config core.fileMode false`
+
+### cheat sheet
+find and clean up repositories recursvely
+`find . -type d -name '.git' -prune -execdir bash -c "pwd; git reflog expire --all --expire=now; git gc --aggressive --prune=now" \;`
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diff --git a/proxmox.md b/proxmox.md
index 754753d..389a9d2 100644
--- a/proxmox.md
+++ b/proxmox.md
@@ -95,8 +95,23 @@ UUID=8d65854a-6be3-45de-81dd-cadbd9f49892 /mnt/slowStorage btrfs defaults,rw 0 1
  10. mysql
  11. file synchronisation syncthing + history storage
  12. backup target borg
- 13. 
+ 13. docker host
+     * portainer
+ 15. 
  
  #### maybe
  4. armbian build
- 5. openwrt build
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+ 5. openwrt build
+
+
+#### postgresql
+- use lxc
+- add second mount point for database
+- install postggresql and start service, register service for auto start
+- change postgres password
+- login as postgres user and alter database password
+- `psql -c "ALTER USER postgres WITH PASSWORD 'your-password';"`
+
+
+##### nextcloud
+`sed -i 's/\$vEvent->add(\$alarm)/\#\$vEvent->add(\$alarm)/g' apps/dav/lib/CalDAV/BirthdayService.php`
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