diff --git a/tns-platform-declarations/README.md b/tns-platform-declarations/README.md
@@ -34,9 +34,105 @@ By default the android.d.ts file contains the typings for android API level 17.
 d.ts files require a lot of memory and CPU. Consider adding skipLibCheck option to tsconfig file.
 
 ## Generate android .d.ts files
-* To generate android dependencies use [android-dts-generator](https://github.com/NativeScript/android-dts-generator) with the appropriate android version and android support jars
+* To generate android dependencies use [android-dts-generator](https://github.com/NativeScript/android-dts-generator) with the appropriate android version and androidx jars
 * To regenerate android-*.d.ts file use the **android-dts-generator** passing the corresponding android jar (described [here](https://github.com/NativeScript/android-dts-generator/blob/master/README.md#generate-definitons-for-android-sdk))
-* More details for using the **android-dts-generator** can be found in [this article](https://docs.nativescript.org/core-concepts/android-runtime/metadata/generating-typescript-declarations).
+
+### Generate new Android platform typings
+The easiest way is to use the [makefile](https://github.com/NativeScript/android-dts-generator/blob/master/Makefile) in the [android-dts-generator](https://github.com/NativeScript/android-dts-generator) repo.
+
+Open the makefile and check whether it already contains the command entry for the Android platform version you'd like to generate typings for. If it does not exist, add it. For example for api level 29 you need to add the following:
+``` bash
+android-platform-29:
+        java -jar dts-generator/build/libs/dts-generator.jar -input ${ANDROID_HOME}/platforms/android-29/android.jar
+        mv out/android.d.ts out/android-platform-29.d.ts
+```
+
+Again in the makefile update the `android-platform-all` command like this:
+``` bash
+android-platform-all: android-platform-17 android-platform-18 android-platform-19 android-platform-20 android-platform-21 \
+        android-platform-22 android-platform-23 android-platform-24 android-platform-25 android-platform-26 android-platform-27 \
+        android-platform-28 android-platform-29
+```
+Now execute from command line the following:
+``` bash
+make android-platform-29
+```
+
+Copy the output from `out/android-platform-29.d.ts` to `tns-platform-declarations/android` folder in this repo.
+Again in NativeScript repo create a new platform d.ts file in `tns-platform-declarations` folder by copying and updating an existing d.ts. For example as we are generating typings for api level 29 copy `tns-platform-declarations/android-28.d.ts`, rename it to `tns-platform-declarations/android-29.d.ts` and update its file contents like this:
+``` ts
+/// <reference path="./android/android-platform-29.d.ts" />
+/// <reference path="./android/androidx-28.d.ts" />
+/// <reference path="./android/common.d.ts" />
+```
+
+NOTE that at this point we did not update the androidx reference above. To avoid having androidx typings for every different API level we try to reuse androidx typings built with an older API level for a range of Android versions (e.g. androidx 26 typings can be used for both api levels 26 and 27). Now we need to check whether the new platform typings can use the existing androidx d.ts, or we need to generate new ones.
+
+In `tns-platform-declarations` folder in main NativeScript repo execute the following:
+``` bash
+# not mandatory, just to verify that the existing setup was ok (should complete without errors)
+tsc android-28.d.ts
+
+# this is the actual check for the new platform typings
+tsc android-29.d.ts
+```
+
+If `tsc` command completed without errors, you are good to go; otherwise you need to generate the androidx typings with the same android API level super jar (more details [here](https://github.com/NativeScript/android-dts-generator#android-support-specifics) but you can also just follow the section below). 
+
+### Generate Androidx typings for new platform version
+You can find the Androidx 1.0.0 jars [here](https://github.com/NativeScript/android-dts-generator/tree/master/libs/androidx/1.0.0) but we'll demonstrate how to extract the jars from scratch that will be useful for androidx version update. As androidx needs the base android jar file to create its typings you need to pass the android.jar file as a **super** parameter to the generator.
+
+Open makefile in the [android-dts-generator](https://github.com/NativeScript/android-dts-generator) repo and the following (as we are generating typings for android api level 29):
+``` bash
+androidx-29:
+		java -jar dts-generator/build/libs/dts-generator.jar \
+		-input dts-generator/jar-files/ -input-generics libs/generics.txt \
+		-super ${ANDROID_HOME}/platforms/android-29/android.jar -skip-declarations
+		mv out/android.d.ts out/androidx-29.d.ts
+```
+Again in the makefile update the `androidx-all` command like this:
+``` bash
+androidx-all: androidx-17 androidx-23 androidx-26 androidx-28 androidx-29
+```
+Now we need to extract all androidx jars in`dts-generator/jar-files` folder (follow [https://github.com/NativeScript/android-dts-generator#finding-package-dependencies](https://github.com/NativeScript/android-dts-generator#finding-package-dependencies). Note that the necessary androidx dependencies are commented out in the [dts-generator/build.gradle](https://github.com/NativeScript/android-dts-generator/blob/master/dts-generator/build.gradle) file, you just need to temporarily uncomment them:
+```
+// ...
+
+dependencies {
+implementation 'org.apache.bcel:bcel:6.2'
+implementation 'commons-io:commons-io:2.6'
+implementation 'com.google.code.findbugs:findbugs:3.0.1'
+
+// add your dependency here as the example bellow, make sure you are using testCompileOnly
+//AndroidX
+//testCompileOnly "androidx.legacy:legacy-support-v4:1.0.0" 	<------ uncomment but do not commit
+//testCompileOnly "androidx.appcompat:appcompat:1.0.0" 			<------ uncomment but do not commit
+//testCompileOnly "com.google.android.material:material:1.0.0" 	<------ uncomment but do not commit
+}
+
+// ...
+```
+From `dts-generator` folder execute the following in command line (that will get the needed jars in `dts-generator/jar-files` folder):
+``` bash
+./gradlew extractAllJars
+```
+
+Now execute from command line the following:
+``` bash
+make android-platform-29
+```
+Copy the output from `out/androidx-29.d.ts` to `tns-platform-declarations/android` folder in the main [NativeScript](https://github.com/NativeScript/NativeScript) repo. Again in main NativeScript repo update the contents of `tns-platform-declarations/android-29.d.ts` like this:
+``` ts
+/// <reference path="./android/android-platform-29.d.ts" />
+/// <reference path="./android/androidx-29.d.ts" />
+/// <reference path="./android/common.d.ts" />
+```
+
+In `tns-platform-declarations` folder in main NativeScript repo execute the following:
+``` bash
+# should complete without errors now
+tsc android-29.d.ts
+```
 
 ## Generate ios .d.ts files