Unlocked (Rogers) Treo 680 Problem: No network after 1.12 upgrade

[biofloat]

Here's what I did:

1. Bought Rogers GSM Treo 680 on Ebay and inserted my T-Mobile SIM Card.
2. Bought and applied unlock code.
3. Successfully used Treo 680 on T-Mobile (USA) for 7 months. Everything worked fine.
4. Recently upgraded to firmware version 1.12 using Palm "Unlocked" download. (Probably a mistake...I thought since I had unlocked the phone, I should use this Unlocked upgrade.) Now the phone would not connect to T-Mobile anymore.
5. Re-upgraded using Treo 680 Rogers 1.12 download on Palm site. Still won't connect to T-Mobile.
6. I couldn't find my unlock code, so spent $25 on a new unlock code. Entered it, reboot, still won't connect to T-Mobile.

Note: I can see T-Mobile and ATT in my "Select network" list. It always responds with "Unable to register with selected network".

What do I do now?

FYI, some of my phone info, if it matters:

Firmware: R01.92
Software: Treo680-1.12-ROW
CC-Cap: ROG-ROG-015
Carrier DB: 549
Hardware: A

[delorean13]

get a new phone

[stevetaz]

Well that was helpful.

What a great first post!!!

I can't wait to see your second....

SteveTaz

[biofloat]

Solution: It turns out my 7-8 year old SIM card went bad (or was corrupted) during the upgrade process. T-Mobile Handheld Support authorized new SIM card for free - I picked it up at a downtown Seattle T-Mobile store.

[stevetaz]

I am glad you had success and it also sounds like TMo was pretty cooperative.

Good for you and thanks for coming back to share the solution....You may save someone else a headache.

SteveTaz