HTC-USA solved my problem of not connection to 3G network

[pepefirst]

I owned this information to this forum:
After many workarounds and trials/errors, I called to HTC-US explaining my problem with my TyTN II.
They worked in following way:
1. I sent them, to my cost, the phone (they asked to send only the phone without battery, back cover and SIM)
2. They took in deposit the information of my credit card just in case they needed to use it for a payment if the repair is out of the warranty. If this were the case they would inform me the amount and I had to decide to make the repair and pay the charge or not to make it.
They told me that they had to change the phone main board: I believe that everyone who has a similar problem like mine (bad or not connection to the 3G network and sluggish touch screen) should contact HTC-US to Customer Care Department, 1-888-617-1113, M-F 9AM - 6PM EST.
In my case the phone was in warranty (although I flashed the Hard SPL in the phone, but the hardware was untouched). Therefore, I had to pay…zero. And they returned my phone in just 4 business days.
My phone is working very good, always connected showing an H indicating the use of a HSDPA network.
The cost of the solution was $ 20 by the FedEx service to send them the phone. Good deal.

[shogunzero]

I am having those exact same issues, and an additional one when using bluetooth, I FREQENTLY lose connectity, and/or drop calls. I also called HTC, they told me as my phone was an at&t TiLT (unlocked-because I moved to Australia), that wouldn't allow any hotfix downloads, ROM Updates, nor would they do for me what they did for you.

I called at&t and said the same thing, but if you think customer service when you are a customer is bad with at&t, try AFTER your a customer, they honest to God laughed when I suggested they should help me make some Bluetooth Hotfixes, and a ROM update (I believe there have been 2 since my version), and lastly, it gets worse, even if i miraculously found the hotfixes, ROM versions, etc. I OWN A MACBOOK PRO, and I don't think I'm nrave enough to attempt my first ROM update for Win XP through VMWarefusion, through a MAC OS X 10.5.6. I am glad for you though that you got that done. I am even an HTC e-club (I think that's what they call it) but no matter, to them it's not an HTC phone, which is SO MUCH BS! Anyway, congrats, if you hear of anyway I can circumvent HTC and get what you had done, PLEASE help a dude out and let me know. Regards, Shogunzero

[denco7]

I am having those exact same issues, and an additional one when using bluetooth, I FREQENTLY lose connectity, and/or drop calls. I also called HTC, they told me as my phone was an at&t TiLT (unlocked-because I moved to Australia), that wouldn't allow any hotfix downloads, ROM Updates, nor would they do for me what they did for you.

I called at&t and said the same thing, but if you think customer service when you are a customer is bad with at&t, try AFTER your a customer, they honest to God laughed when I suggested they should help me make some Bluetooth Hotfixes, and a ROM update (I believe there have been 2 since my version), and lastly, it gets worse, even if i miraculously found the hotfixes, ROM versions, etc. I OWN A MACBOOK PRO, and I don't think I'm nrave enough to attempt my first ROM update for Win XP through VMWarefusion, through a MAC OS X 10.5.6. I am glad for you though that you got that done. I am even an HTC e-club (I think that's what they call it) but no matter, to them it's not an HTC phone, which is SO MUCH BS! Anyway, congrats, if you hear of anyway I can circumvent HTC and get what you had done, PLEASE help a dude out and let me know. Regards, Shogunzero

Just because your phone is sim unlocked, doesn't mean none of the rom upgrades or hotfixes won't work. It still has an AT$T rom. Just boot into Windows XP, connect via active sync 4.5 and download and flash away. I do it all the time on my Intel Imac with Bootcamp. never ever a hitch.

These are the only rom upgrades and hot fixes for the Tilt. There are also some great custom roms and flashing tutorials here to make your phone run better than AT$T ever thought of making it run.

A sim unlock does not affect your rom. AT$T are full of crap. As is HTC. I would love to be an HTC Tech. Connectivity issue ? Replace the motherboard.
Wifi won't work? replace the motherboard. Stylus broke? Replace the motherboard. I cannot remember talking to one person who has sent their phone to HTC for repairs, and have not had it sent back without being diagnosed as a bad motherboard. The lucky ones are the ones that get it covered under warranty.
I can't connect to XDA is the server down? Replace the motherboard:)

http://www.htc.com/us/supportdownloadlist.aspx?p_id=67&act=sd&cat=all