Need help htc thunderbolt upgrde

[Kathii-Nicole Hernandez Cx]

so i have the htc thunderbolt and i want to update it to 4.0- but it has no service how can i update the software??

 

[Kelly Burby]

so i have the htc thunderbolt and i want to update it to 4.0- but it has no service how can i update the software??

Well, you can update the software over the wifi connection if there is no service, and one more thing you need to remember updates will only pop up if your vendor HTC has rolled it out for you otherwise it will show updates is not available for your device.