diff --git a/docs/sdcard.md b/docs/sdcard.md
index ea1cbcc..82d9961 100644
--- a/docs/sdcard.md
+++ b/docs/sdcard.md
@@ -30,11 +30,13 @@ Install the dependencies and extract the source into ~/src/linux
 ```
 sudo apt-get -y install build-essential linux-source-4.14.87-next-mvebu
 mkdir -p ~/src/linux
-tar Jxf /usr/src/linux-source-4.14.87-mvebu.tar.xz -C ~/src/linux
+tar Jxf /usr/src/linux-source-$(uname -r).tar.xz -C ~/src/linux
 ```
 
 !!! note
-    You will need to choose the right *linux-source* package that matches the kernel version you are running. Check kernel version with command **uname -a**
+    You will need to choose the right *linux-source* package that matches the kernel version you are running. Check kernel version with command **uname -r**.
+
+    Currently it does NOT work with *Linux Kernel 4.19* onward.
 
 
 ### Patching and Compilation
@@ -51,6 +53,7 @@ git apply --apply --verbose helios4_dtb_sd_uhs_linux_stable.patch
 Compile the device tree into dtb
 
 ```
+cp /boot/config-$(uname -r) .config
 make armada-388-helios4.dtb
 cp arch/arm/boot/dts/armada-388-helios4.dtb armada-388-helios4.dtb.uhs
 ```
@@ -118,7 +121,7 @@ To automate the test, a test script named [run_sdcard_test.sh](/files/sdcard/run
 **3.** Install iozone and download the test script
 
 ```
-sudo apt-get -y install iozone
+sudo apt-get -y install iozone3
 
 wget https://wiki.kobol.io/files/sdcard/run_sdcard_test.sh
 chmod 755 run_sdcard_test.sh