Update downporting.md

Author: oblomov-dev

docs/advanced/downporting.md

@@ -1,32 +1,16 @@
 # Downporting
 
-abap2UI5 works out of the box with ABAP version 750. If you are on a lower release, you can install the downported repositories. <br>
+abap2UI5 works out of the box with ABAP version 750. If you are on a lower release, you can install the downported version, it is compatible down to R/3 NetWeaver >702. <br>
 
-All downported versions of abap2UI5 and its addons can be found  here: <br>
-[abap2UI5-downported](https://github.com/abap2UI5/abap2UI5/tree/702)
-<br>
+#### Branch
 
-For more information on this concept, check out this blog post: <br>
-[Running abap2UI5 on older releases](https://www.linkedin.com/pulse/running-abap2ui5-older-r3-releases-downport-compatibility-abaplint-mjkle/)
+Just install the project with the `702` branch:
+| Branch    | System                | 
+|-----------| ----------------------------|
+| main     | S/4 Public Cloud, BTP ABAP Environment, S/4 Private Cloud, S/4 On-Premise, R/3 NetWeaver >750 |
+| 702  |  R/3 NetWeaver >702   |
 
-The HTTP handler implemenation for lower releases looks like this:
-```abap
-CLASS z2ui5_cl_launchpad_handler DEFINITION PUBLIC FINAL CREATE PUBLIC .
+The samples and some other repositories also exist with a dowmported version, always just check out if a `702` branch exists.
 
-  PUBLIC SECTION.
-    INTERFACES if_http_extension.
-
-  PROTECTED SECTION.
-  PRIVATE SECTION.
-ENDCLASS.
-
-CLASS z2ui5_cl_launchpad_handler IMPLEMENTATION.
-
-  METHOD if_http_extension~handle_request.
-
-    z2ui5_cl_http_handler=>run( server ).
-
-  ENDMETHOD.
-
-ENDCLASS.
-```
+#### Functionality
+Check out the following [blog post](https://www.linkedin.com/pulse/running-abap2ui5-older-r3-releases-downport-compatibility-abaplint-mjkle) for more information on the downport functionality.