For some reason I can't upgrade it. The DM is suppose to notify me that I can upgrade to a newer OS. Currently I have 18.104.22.168 running on my 8120 and I've download and installed 22.214.171.124. Application Loader does nothing to tell me there's an upgrade. I have T-Mobile and I have already deleted the vendor.xml. I'm not really sure what else I can do or what I'm missing, any help would be apperciated. Thank you in advance.