1. If you use Magento's compilation mode turn it off
2. Turn on Magento's configuration cache (if not already on)
3. Upload the contents of the zip file you downloaded from here to your Magento store. (the files from within the app folder should match up with your already existing app folder)
4. Refresh Magento's configuration cache / turn it back off
5. Log out of the back-end
6. Log back into the back-end (this is necessary to reload the new admin permissions)
7. (optional) if you have previously used Magento's compilation mode - rerun the process before enabling it again
8. (optional) in Vend create a new user to be used by this extension
9. configure the extension in Magento under System > Configuration > Fooman Connect > Vend

Installation Video

Step 1 Install Extension

Unpack the downloaded zip file in your Magento root folder.
Delete the contents of the /var/cache folder to force Magento to update its configuration (alternatively refresh the configuration cache in your Magento backend).

Step 2 Prepare an SSL certificate for use with Xero

Go to Fooman Connect > Xero - Orders
Click the link to create a Private Key

Click the new link to download the Public Key and save it on your computer

Step 3 Setting up a new Application in Xero

Go to api.xero.com and login with your Xero login

Choose to add a new application Choose "Private"

Enter any information into Application Name

Select the publickey.cer as a X509 certificate

Click Save

Step 4 Configuring Magento

Go to System > Configuration > Fooman Connect
Copy the Oauth Credentials Key to your Magento back-end (Consumer Key)
Copy the Oauth Credentials Secret to your Magento back-end (Consumer Secret)

Click Save Config

Step 5 Finish setting up

With the provided credentials Magento will now connect to Xero and retrieve information about your organisation. You can configure Fooman Connect with your settings from Xero (Accounts,Tracking Options, etc)

Choose Enable - Yes
Save Config

Step 6 Map Tax Rates

Go to Sales > Tax > Manage Tax Rates & Zones

Go into each individual Tax Rate and choose the appropriate Xero Tax Rate from the dropdown
It is important to map tax rates with the same effective tax rate.

Step 7 Export your Orders Manually

Go to Fooman Connect - Xero Click Process All Unexported Orders or tick the checkboxes next to individual orders and choose Process Selected from the Action dropdown menu and Submit

Go to Xero and review the exported orders under draft invoices

Step 8 Set up Automatic Exports

Go to System > Configuration > Fooman Connect
Choose Enable Automatic Exports - Yes
Save Config

Guide with Screenshots

Step 1 Install Extension

Unpack the downloaded zip file in your Magento root folder.
Delete the contents of the /var/cache folder to force Magento to update its configuration (alternatively refresh the configuration cache in your Magento backend).

Step 2 Prepare an SSL certificate for use with Xero

openssl genrsa -out privatekey.pem 1024

openssl req -newkey rsa:1024 -x509 -key privatekey.pem -out publickey.cer -days 365

openssl pkcs12 -export -out public_privatekey.pfx -inkey privatekey.pem -in publickey.cer

After these steps you should have three files named privatekey.pem, publickey.cer and public_privatekey.pfx

Step 3 Setting up a new Application in Xero

Go to api.xero.com and login with your Xero login

Choose to add a new application Choose "Private"

Enter any information into Application Name

Select the publickey.cer as a X509 certificate

Click Save

Step 4 Configuring Magento

Go to System > Configuration > Fooman Connect

Copy the Oauth Credentials Key to your Magento back-end (Consumer Key)
Copy the Oauth Credentials Secret to your Magento back-end (Consumer Secret)
Copy the contents of the file privatekey.pem to your Magento back-end (Private Key), fill in the Password of Private Key field if you have assigned a password during the generation of the certificate.

Click Save Config

Step 5 Finish setting up

With the provided credentials Magento will now connect to Xero and retrieve information about your organisation. You can configure Fooman Connect with your settings from Xero (Accounts,Tracking Options, etc)

Choose Enable - Yes
Save Config

Step 6 Map Tax Rates

Go to Sales > Tax > Manage Tax Rates & Zones

Go into each individual Tax Rate and choose the appropriate Xero Tax Rate from the dropdown
It is important to map tax rates with the same effective tax rate.

Step 7 Export your Orders Manually

Go to Fooman Connect - Xero Click Process All Unexported Orders or tick the checkboxes next to individual orders and choose Process Selected from the Action dropdown menu and Submit

Go to Xero and review the exported orders under draft invoices

Step 8 Set up Automatic Exports

Go to System > Configuration > Fooman Connect
Choose Enable Automatic Exports - Yes
Save Config