Once in the recovery menu (blue or black background with text):

Your phone pairs but disconnects every 30 seconds. Newer firmware often contains updated Bluetooth stack drivers.

Are you currently able to , or is the device bricked/stuck ?

First boot will take 5–10 minutes. Do not turn off the ignition.

The screen stays black, but your computer recognizes the device as "Samsung USB Driver" or "Unisoc Phone" via ADB. This means the bootloader is alive, but the system UI is dead.

If you want to move forward with the installation, let me know:

UMS512 is a System on a Chip (SoC) manufactured by (formerly Spreadtrum). It is an octa-core processor built on a 12nm process, featuring:

Once every 12–18 months, or when a critical bug affects daily use. Avoid “beta” or “test” builds shared on Telegram groups.

: AudioWork (Model P23S), Joying, and various TS10-based units How to Update Your Firmware

Before downloading random files from the internet, it is critical to understand what you are working on. The is not a phone model; it is a PCB (Printed Circuit Board) identifier .