If you are looking for firmware because the phone is locked or malfunctioning, you might consider these alternatives: PREMIOX Premio S87 tutorials - HardReset.info
While there is no single "official" central repository for Premio S87
If it stays on the logo, try performing a hard reset (Recovery Mode) to clear data. premio s87 firmware link
Whether your phone is currently
Ensure you know if your S87 uses an MTK (MediaTek) or SPD (Spreadtrum/Unisoc) chipset before attempting to flash, as using the wrong tool (SP Flash Tool vs. SPD Upgrade Tool) will damage the phone. If you are looking for firmware because the
using the recovery menu (typically holding Volume Up + Power) rather than flashing a full firmware. Slow Performance:
A stable connection is vital. Use a high-quality or original USB cable connected directly to your computer's motherboard port. using the recovery menu (typically holding Volume Up
The update process may take several minutes. Do not disconnect your device from the computer or shut down the update process.
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: If your device hangs at the Premio logo and refuses to load the main menu.
, which hosts stock ROMs for various Premio models. While the specific S87 link may vary, these platforms generally provide the full Stock ROM / Flash File Device Specifications for Verification