Using the correct firmware is critical. Search for the exact version number you need for your Benco V90. Here are a few examples found for the :
It looks like you're looking for a (firmware/stock ROM) to fix a Benco V90 (model AE9120) that’s stuck on the S160 logo (boot loop/hang at logo). lava benco v90 ae9120 flash file s160 hang logo high quality
The phone should now boot into the Android setup screen. Follow the prompts to complete the initial configuration. Using the correct firmware is critical
Persistent "App has stopped" messages or UI crashes. The phone should now boot into the Android setup screen
The first boot after flashing can take 5-10 minutes or longer. Allow the process to complete.
These files often include updated security patches and fixes for the very bugs that cause the boot loop in the first place. Restoration and Repair Process
Right-click the installer file and select . Follow the on-screen prompts to complete the setup.