Create upgrade_m1.rst

docs/general/upgrade/upgrade_m1.rst

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+Update Module in Magento 1 Manually
+==========================================================
+
+.. role:: step
+
+.. role:: mail
+
+.. role:: remark
+
+**Update module via FTP**
+Extract module’s file, place this file into code folder of Magento site:
+
+.. image:: images/update-module-m1.PNG
+
+Log into backend, flush Magento cache and check the module function after updating.
+In case you want to completely uninstall the old module before updating, follow these steps:
+
+**Step 1**: To disable module, edit this file
+
+/app/etc/modules/<your_module>.xml;
+
+Replace <active>true</active>  by <active>false</active>;
+
+**Step 2**: Delete all mysql tables created by the module
+
+**Step 3**: Delete the module in the core_recourse table
+
+**Step 4**: Delete files in the <project_root>/var/cache folder
+
+**Step 5**: Refresh Magento site and the module has been removed successfully 
+
+Then put the code of the module to site’s folder via ftp as mentioned above and flush Magento cache