diff --git a/README.md b/README.md
index f71c7a38..4a96872b 100644
--- a/README.md
+++ b/README.md
@@ -47,28 +47,19 @@ In other cases you can contact the developer via email: <img src="https://raw.gi
 
 
 
-##### Rolling (2021-09-22)
+##### 8.4.0 - Multi Meter Support (2021-09-24)
 
-* html: incorporate hostname to title and main page
-* Improved stability during html requests
+* License change (remove MIT license, remark see below)
 
-Rolling (2021-09-21)
+* html: show hostname in title and main page
 
-* bug fix
+* configuration: 
 
+  * moved setting `ExtendedResolution` to individual number settings
+  * New parameter `IgnoreLeadingNaN` (delete leading NaN's specifically)
+  * **ATTENTION**: update of the `config.ini` needed (open, adjust `ExtendedResolution`, save)
 
-
-Rolling (2021-09-20)
-
-* Moved setting `ExtendedResolution` to individual number settings
-
-* New parameter `IgnoreLeadingNaN`
-
-* **ATTENTION: update of `config.ini` is necessary**
-
-* Remove of the MIT license (see below)
-
-* bug fix: decimal shift
+* Bug fixing (html, images of recognized numbers)
 
   
 
@@ -76,15 +67,10 @@ Rolling (2021-09-20)
 
 - Currently no licence published - copyright belongs to author
 - If you are interested in a commercial usage or dedicated versions please contact the developer
+  - no limits to private usage
 
 
 
-Rolling (2021-09-12)
-
-* Preparation for external illumination (WS281x)
-* Bug fixing (html, Images of recognized numbers)
-* based on v8.3.0 (2021-09-12)
-
 ##### 8.3.0 - Multi Meter Support (2021-09-12)
 
 * Upgrade digital CNN to v12.1.0 (added new images)
diff --git a/code/components/jomjol_flowcontroll/ClassFlowCNNGeneral.cpp b/code/components/jomjol_flowcontroll/ClassFlowCNNGeneral.cpp
index 7ac329d9..e6afbbc0 100644
--- a/code/components/jomjol_flowcontroll/ClassFlowCNNGeneral.cpp
+++ b/code/components/jomjol_flowcontroll/ClassFlowCNNGeneral.cpp
@@ -10,7 +10,7 @@
 
 static const char* TAG = "flow_analog";
 
-bool debugdetailgeneral = true;
+bool debugdetailgeneral = false;
 
 ClassFlowCNNGeneral::ClassFlowCNNGeneral(ClassFlowAlignment *_flowalign, t_CNNType _cnntype) : ClassFlowImage(NULL, TAG)
 {
diff --git a/code/components/tfmicro.zip b/code/components/tfmicro.zip
new file mode 100644
index 00000000..b8ea5596
Binary files /dev/null and b/code/components/tfmicro.zip differ
diff --git a/code/components/tfmicro_new_version.zip b/code/components/tfmicro_new_version.zip
new file mode 100644
index 00000000..98f57a42
Binary files /dev/null and b/code/components/tfmicro_new_version.zip differ
diff --git a/code/main/version.cpp b/code/main/version.cpp
index b26b4b83..0cef43b5 100644
--- a/code/main/version.cpp
+++ b/code/main/version.cpp
@@ -1,4 +1,4 @@
-const char* GIT_REV="9b3665b";
+const char* GIT_REV="e2a4034";
 const char* GIT_TAG="";
 const char* GIT_BRANCH="rolling";
-const char* BUILD_TIME="2021-09-22 21:16";
\ No newline at end of file
+const char* BUILD_TIME="2021-09-23 18:31";
\ No newline at end of file
diff --git a/code/main/version.h b/code/main/version.h
index eb5e597a..d066327f 100644
--- a/code/main/version.h
+++ b/code/main/version.h
@@ -13,7 +13,7 @@ extern "C"
 #include "Helper.h"
 #include <fstream>
 
-const char* GIT_BASE_BRANCH = "master - v8.3.0 - 2021-09-12";
+const char* GIT_BASE_BRANCH = "master - v8.4.0 - 2021-09-24";
 
 
 const char* git_base_branch(void)
diff --git a/code/version.cpp b/code/version.cpp
index b26b4b83..81170a8c 100644
--- a/code/version.cpp
+++ b/code/version.cpp
@@ -1,4 +1,4 @@
-const char* GIT_REV="9b3665b";
+const char* GIT_REV="e2a4034";
 const char* GIT_TAG="";
 const char* GIT_BRANCH="rolling";
-const char* BUILD_TIME="2021-09-22 21:16";
\ No newline at end of file
+const char* BUILD_TIME="2021-09-23 18:30";
\ No newline at end of file
diff --git a/firmware/bootloader.bin b/firmware/bootloader.bin
index 9cb7c92e..eb309711 100644
Binary files a/firmware/bootloader.bin and b/firmware/bootloader.bin differ
diff --git a/firmware/firmware.bin b/firmware/firmware.bin
index 07319e74..57d674de 100644
Binary files a/firmware/firmware.bin and b/firmware/firmware.bin differ
diff --git a/firmware/html.zip b/firmware/html.zip
index 5f97fee9..35657b00 100644
Binary files a/firmware/html.zip and b/firmware/html.zip differ
diff --git a/sd-card/config/dig1200s1q.tflite b/sd-card/config/dig1200s1q.tflite
deleted file mode 100644
index fbca07d6..00000000
Binary files a/sd-card/config/dig1200s1q.tflite and /dev/null differ
diff --git a/sd-card/html/index.html b/sd-card/html/index.html
index 5613fbae..acf38a3c 100644
--- a/sd-card/html/index.html
+++ b/sd-card/html/index.html
@@ -126,7 +126,7 @@ li.dropdown {
      }
      catch (error)
      {
-               alert("Loading Hostname failed");
+//               alert("Loading Hostname failed");
      }
   }