diff --git a/docs/armbian.md b/docs/armbian.md
index 5a0c0ad..44ea31f 100644
--- a/docs/armbian.md
+++ b/docs/armbian.md
@@ -4,8 +4,7 @@ Debian based Linux for ARM based single-board computers
[https://www.armbian.com](https://www.armbian.com "Armbian")
-
-# How to build an image or a kernel?
+## How to build an image or a kernel?
Supported build environment is **Ubuntu Bionic 18.04 x64** ([minimal iso image](http://archive.ubuntu.com/ubuntu/dists/bionic/main/installer-amd64/current/images/netboot/mini.iso)).
@@ -28,3 +27,5 @@ Make sure that full path to the build script does not contain spaces.
You will be prompted with a selection menu for a build option, a board name, a kernel branch and an OS release. Please check the documentation for [advanced options](https://docs.armbian.com/Developer-Guide_Build-Options/) and [additional customization](https://docs.armbian.com/Developer-Guide_User-Configurations/).
Build process uses caching for the compilation and the debootstrap process, so consecutive runs with similar settings will be much faster.
+
+*Source: https://github.com/armbian/build/blob/master/README.md*
diff --git a/docs/download.md b/docs/download.md
index 6b62da5..953c4b1 100644
--- a/docs/download.md
+++ b/docs/download.md
@@ -41,8 +41,8 @@ Size : 198 MB
*
Filename | Download | MD5
---------|----------|----
-**Armbian_5.51_Helios4_Debian_stretch_next_4.14.53.7z**
Armbian Debian 9 Stretch (Kernel 4.14.53)
Build date : 17/02/2018
Size :251 MB|[Download](https://dl.armbian.com/helios4/archive/Armbian_5.51_Helios4_Debian_stretch_next_4.14.53.7z)|304739cd4059583ce84e736068fc7eb9
-**Armbian_5.51_Helios4_Ubuntu_bionic_next_4.14.53.7z**
Armbian Ubuntu 18.04 Bionic (Kernel 4.14.53)
Build date : 05/02/2018
Size :198 MB|[Download](https://dl.armbian.com/helios4/archive/Armbian_5.51_Helios4_Ubuntu_bionic_next_4.14.53.7z)|b65fb6edee4833e45b6ca34835340482
+**Armbian_5.51_Helios4_Debian_stretch_next_4.14.53.7z**
Armbian Debian 9 Stretch (Kernel 4.14.53)
Build date : 04/07/2018
Size :251 MB|[Download](https://dl.armbian.com/helios4/archive/Armbian_5.51_Helios4_Debian_stretch_next_4.14.53.7z)|304739cd4059583ce84e736068fc7eb9
+**Armbian_5.51_Helios4_Ubuntu_bionic_next_4.14.53.7z**
Armbian Ubuntu 18.04 Bionic (Kernel 4.14.53)
Build date : 04/07/2018
Size :198 MB|[Download](https://dl.armbian.com/helios4/archive/Armbian_5.51_Helios4_Ubuntu_bionic_next_4.14.53.7z)|b65fb6edee4833e45b6ca34835340482
**Armbian_Helios4_Debian_Stretch_4.14.20.img.xz**
Debian 9 Stretch (Kernel 4.14.20)
Build date : 17/02/2018
Size :229 MB|[Download](https://cdn.kobol.io/files/Armbian_Helios4_Debian_Stretch_4.14.20.img.xz)|fc98aac0c0f1617061bd6f5112896838
**Armbian_Helios4_Debian_Stretch_4.14.17.img.xz**
Debian 9 Stretch (Kernel 4.14.17)
Build date : 05/02/2018
Size :230 MB|[Download](https://cdn.kobol.io/files/Armbian_Helios4_Debian_Stretch_4.14.17.img.xz)|89ab81d74300ef346498066bcc742b0a
**Armbian_Helios4_Debian_Stretch_4.14.12.img.xz**
Debian 9 Stretch (Kernel 4.14.12)
Build date : 06/01/2018
Size :242 MB|[Download](https://cdn.kobol.io/files/Armbian_Helios4_Debian_Stretch_4.14.12.img.xz)|a97fef50ecb1c14a6013695f3b2a51b6