The HTC EVO 4G LTE has been out since mid-2012, but HTC and Sprint have been facing difficulties updating the device to Android 4.3. It was supposed to be available by the end of 2013, but it was re-scheduled for this month. However, it looks like HTC hasn't forgot about this update yet.
Bad news for folks who own Sprint's EVO 4G LTE. HTC posted a notice on Reddit yesterday that the Android 4.3 Jelly Bean will not be available as an over-the-air (OTA) update for the device because of its memory limitations. However, HTC is working on a new process which will allow the more “technical customers” to update the device manually.
HTC hasn't provided further details about the process but if you're interested in updating your EVO 4G LTE to Android 4.3, you can sign up for the new process by shooting an email to HTC at HTCTrial@htc.com.
Source: HTC Reddit
Via: Phandroid
I was lucky enough to contact a HTC dev on twitter and get him to send me the file. Unfortunately as of now he is now posting on twitter that the HTCtrial e-mail address will be live sometime next week.
Currently a few people are reporting there is a problem with the 4.3 update and it not allowing data roam, HTC is looking into the problem.
No luck with that email still