Everything at once:
Make everything in market to be install-able at once.
Go OEM zone or search in store to see magic.
There are too many request to my server, so it'll be down sometimes. Use IE on your phone to open any website to check if the proxy is still working. And you can make a donation to improve the stability of server
Please turn off proxy once download has started, I turned off download ability to speed up my server, so you'll get error when download with proxy.
Note that if you opened the app detail or OEM section in market before use the proxy, your phone will cache it for 20 minutes, and no matter what you try, you phone will give you 8000ffff error. So restart your phone to clear the cache.
Install 'SysApp Pusher' in market before use the proxy, then you'll be able to install every OEM apps.
If you see 'not compatible' message, try 3 seconds later with lucky until success. You'll have 1/3 chance to change to target OEM everytime you retry.
If apps does not support your phone's resolution, you can't install it.
If a WP8 app requires 1GB RAM and your device is 512MB RAM, you can't install it, but you can install WP7 games which need 1GB RAM on WP8.