Step01. I Download the patch AS Magento-1.9 Version Open PATCH.sh file Line no 67
# 5. File pathes
#CURRENT_DIR=`$PWD_BIN`/ Change to
CURRENT_DIR=/d/xampp/htdocs/Magento/
Step 02. Open Git Shell
CMD> cd ..
CMD> cd cd xampp\htdocs\magento
CMD>pwd
Path Change as CURRENT_DIR step01
D:\xampp\htdocs\magento
CMD> sh PATCH_SUPEE-5344_CE_1.8.0.0_v1-2015-02-10-08-10-38.sh
Massage: Checking if patch can be applied/reverted successfully... Patch was applied/reverted successfully.
But Showing Alert "Critical Reminder: Download and install Magento security patches. Download now."