Official Redmi S2 stock firmware — flash file, stock ROM & IMEI repair file, free direct download.
Android 9145 ROMs
Model codeysl
Quick answer
The Redmi S2 (model code ysl) has 145 official stock firmware files (flash file / stock ROM) available for free download on ROM Palace — the latest released in Dec 2020. 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 Redmi S2 to its original factory software.
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Redmi S2 stock firmware & flash files (145)
Showing the newest 30 of 145 firmware files — at least two builds per
region and ROM type. See all 145 versions →
Heads up. Redmi firmware is downloaded directly from the official
Redmi / manufacturer servers — we index it so you can find the right build fast.
Flashing can void your warranty or brick your device; proceed at your own risk and back up first.
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 Redmi S2 stock firmware?
Download the stock ROM / flash file for your exact Redmi S2 (ysl), 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 Redmi S2 firmware?
Flashing official stock firmware is safe as long as you use the correct stock ROM / flash file for your exact model code (ysl). Flashing the wrong firmware can brick the device, so always confirm the model code before flashing.
Are these Redmi S2 ROM downloads free?
Yes. Every Redmi S2 firmware file on ROM Palace is free to download with a direct link — no subscription and no waiting queue.
What problems can Redmi S2 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 Redmi S2 to its original factory software.
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