Update firmware first , then flash custom ROM. Never the other way around.
The firmware change update on the HTC One X9 is a welcome improvement for users. The update brings several benefits, including improved performance, enhanced security, and new features. While the update process is relatively straightforward, users should be aware of potential issues that may arise during installation. Overall, we recommend keeping the device's firmware up-to-date to ensure optimal performance and security. Firmware Change Update on HTC One X9
Protect your personal data from newly discovered vulnerabilities. Update firmware first , then flash custom ROM
The radio firmware (modem) affects VoLTE, 4G handovers, and Wi-Fi roaming. Newer firmware reduces network drops when switching between 3G and 4G bands, particularly in regions with Band 28 (700 MHz) support. Update firmware first