Radio-11.77.3504.00U-11.25.3504.06-M : This part of the file name seems to refer to the radio firmware version and the device's modem software.
Indicates the file is digitally signed by HTC, meaning it can be flashed onto devices with a locked bootloader (S-ON), provided the region matches. Key Features of this Update Radio-11
: The baseband modem firmware versions. These control the cellular connectivity, GPS functionality, and signal processing calibrated for regional cellular towers. HTC EVO 3D GSM - Прошивка - 4PDA
The device must be connected to a Windows PC via USB, often in Fastboot mode . Drivers like those found in are required for the computer to recognize the phone. HTC EVO 3D GSM - Прошивка - 4PDA When used correctly
In 2011, the smartphone world was obsessed with 3D. HTC released the
The file represents a specific snapshot of HTC’s official software for the GSM EVO 3D in Taiwan. Understanding its components helps you confirm compatibility before flashing. When used correctly, this utility can breathe new life into an old device, fix stubborn software issues, or return the phone to a pristine stock state. Always respect the precautions – backup your data, check S‑ON/S‑OFF, and never interrupt the flashing process. With careful execution, you can successfully restore your HTC EVO 3D to the official Ice Cream Sandwich experience.
When finished, the RUU will display “Update Complete”. The phone will reboot automatically into the stock Android system. The first boot takes longer than usual (up to 5 minutes) because it is rebuilding caches.