Firstly, you need to download the new theme package from your Themeforest account. Once you have the new theme package, you can choose to upload the theme via WordPress.
Step 1: You need to deactivate the current FinancePlus theme in Appearance > Themes section by simply activating a different theme. Once you activate a different theme, you can delete the FinancePlus.
Step 2: Retrieve the tm_financeplus.zip file from your new Themeforest download. If you download All files & documentation, then you need to unzip the archive file you received, the tm_financeplus.zip file will be inside of it.
Step 3: Then simply upload and activate the FinancePlus file in the Appearance > Themes section like you've done when installing theme.
Step 1: Go to wp-content >> themes location and backup your FinancePlus theme folder by saving it to your computer, or you can choose to simply delete it. Your content will not be lost
Step 2: Retrieve the tm_Finance.zip file from your new Themeforest download and extract the file to get the tm-finance theme folder.
Step 3: Then simply drag and drop or hit Upload the new “Finance Plus” into wp-content > themes location. Choose to Replace the current one if you did not delete it
Step 4: Lastly, update the included plugins. You will see a notification message letting you know the plugins have a new version and need to be updated. You should update the plugins. You can see Update Plugin for more details