LAVA S81 S81_Bihar project
Official LAVA S81 stock firmware — flash file, stock ROM & IMEI repair file, free direct download.
⇄ Compare with another deviceThe LAVA S81 (model code S81_Bihar project) has 1 official stock firmware file (flash file / stock ROM) available for free download on ROM Palace — the latest released in Sep 2025. Each download is a direct, resume-supported link used to unbrick the phone, fix a bootloop, remove FRP, repair a corrupt or null IMEI, downgrade, or restore the LAVA S81 to its original factory software.
Specifications
LAVA S81 stock firmware & flash files (1)
Where to buy the LAVA S81
Compare the current LAVA S81 price at these stores. We show the marketplaces available in your country — prices and availability vary by region.
We may earn a commission from purchases made through these links, at no extra cost to you.
Reviews & videos
Review links open on third-party sites. ROM Palace is not affiliated with them and hosts no copied review content.
Frequently asked questions
How do I flash the LAVA S81 stock firmware?
Download the stock ROM / flash file for your exact LAVA S81 (S81_Bihar project), extract the archive, then flash it with SP Flash Tool (SPFT) for MediaTek (MTK) devices, or the SPD Upgrade / ResearchDownload tool for Unisoc/Spreadtrum (SPD) chipsets. Back up your data first and charge the battery above 50%. See our step-by-step flashing guide for details.
Is it safe to flash LAVA S81 firmware?
Flashing official stock firmware is safe as long as you use the correct stock ROM / flash file for your exact model code (S81_Bihar project). Flashing the wrong firmware can brick the device, so always confirm the model code before flashing.
Are these LAVA S81 ROM downloads free?
Yes. Every LAVA S81 firmware file on ROM Palace is free to download with a direct link — no subscription and no waiting queue.
What problems can LAVA S81 stock firmware fix?
Stock firmware fixes bootloops, a device stuck on the logo, software crashes, failed OTA updates, can remove FRP, repair a corrupt or null IMEI, and restore the LAVA S81 to its original factory software.
Comments
Loading comments…