Crucial Warning: This page shows 7 representative builds out of 23 known files across seven model numbers. TA-1124 is not a regional variant of the same hardware the other six are — it's a different chipset needing a different tool entirely. Verify your device's own model number and chipset before running either method below.
Download Firmware for Nokia 3.1 Plus (TA-1104/1113/1115/1117/1118/1124/1125)
TA-1104 also ships as a China build (00CN) and an earlier-dated 00WW build (ROO-2230) — see the full archive linked above.
↓ DownloadTA-1113 also ships as a China build (00CN) and an earlier-dated 00WW build — see the full archive linked above.
↓ DownloadTA-1115 also ships as three `_OST`-suffixed packages requiring Nokia OST Tool instead of SP Flash Tool — see the full archive linked above.
↓ DownloadTA-1117 also ships as a China build (00CN) and an earlier-dated 00WW build — see the full archive linked above.
↓ DownloadTA-1118 also ships as a China build (00CN) and an earlier-dated 00WW build — see the full archive linked above.
↓ DownloadThe only Qualcomm-based model number in this archive — do not treat as interchangeable with any MediaTek (ROO-prefixed) build, and do not use SP Flash Tool with it.
↓ DownloadTA-1125 also ships as a China build (00CN) and an earlier-dated 00WW build — see the full archive linked above.
↓ DownloadCompatibility & Bootloader Notes
Flashing stock firmware through either tool does not change the bootloader lock state. Nokia/HMD's official unlock process is a separate, request-based procedure through Nokia's own support channel — not an instant command the way some other Android OEMs offer. Whether the Cricket-exclusive TA-1124 is eligible for that process at all is untested here.
Preparation checklist for Nokia 3.1 Plus (TA-1104/1113/1115/1117/1118/1124/1125)
- Confirm the exact TA-xxxx model number from the device label or Settings > About phone.
- Determine whether your model number is MediaTek (every model number except TA-1124) or Qualcomm (TA-1124 only) — this decides which tool you need.
- Install SP Flash Tool and a compatible Download Agent (DA) file for MediaTek models, or Nokia's OST Tool for OST-suffixed packages and TA-1124.
- Back up accessible user data before flashing — both tools typically wipe it on a full firmware flash.
How to Flash Nokia 3.1 Plus (TA-1104/1113/1115/1117/1118/1124/1125)
SP Flash Tool (MediaTek MT6762 models)
SP Flash Tool works the same way across thousands of devices from many brands, so the full walkthrough lives on FlashGuideHub. What is specific to Nokia 3.1 Plus (TA-1104/1113/1115/1117/1118/1124/1125) is below.
- Confirm your model number is one of the six MediaTek model numbers (every one except TA-1124), then install SP Flash Tool, the MediaTek USB VCOM drivers, and a Download Agent (DA) file compatible with MT6762
- Extract the Nokia 3.1 Plus firmware package matching your exact model number, build family (ROO-), and region (00CN or 00WW), and locate the scatter-loading file inside it
- Open SP Flash Tool, load the scatter file under "Scatter-loading File," and confirm the partition list populates
- Power the phone off, click Download in SP Flash Tool, then connect the USB cable — many MediaTek devices need the cable connected after the tool starts scanning, not before
- Wait for the green checkmark confirming the flash completed, then disconnect and boot the phone normally
Nokia OST Tool (OST packages and TA-1124)
- Use this method for any file ending in `_OST.zip` (including three of TA-1115's builds), or for any TA-1124 file regardless of suffix — TA-1124 is Qualcomm-based and SP Flash Tool does not apply to it at all
- Install Nokia's Online Service Tool and be prepared that some builds require a Nokia service-account login rather than working fully offline
- Connect the phone via USB and follow the OST application's own device-detection and repair flow — it identifies your exact model and offers the matching repair/reflash option
- Confirm the repair and let the tool flash the firmware without disconnecting the device
- Once it finishes and the phone reboots, confirm the software landed correctly under Settings > About phone and that mobile signal appears
Frequently Asked Questions
It depends entirely on your file, not preference: a plain MediaTek package (no `_OST` suffix, not TA-1124) uses SP Flash Tool. Anything ending in `_OST.zip`, or any TA-1124 file, needs Nokia OST Tool instead — SP Flash Tool simply won't recognize a Qualcomm-based TA-1124 device or authenticate against an OST-format package.
TA-1124 is genuinely Qualcomm silicon, so EDL-mode servicing is possible in principle the way it isn't on the MediaTek model numbers here — but no source confirms a specific working QFIL/EDL consumer flashing path for this exact device, and no dedicated EDL package is known in this archive. Treat OST Tool as the confirmed method for TA-1124 and QFIL/EDL as unconfirmed.
Both methods below apply to every Nokia 3.1 Plus build in this archive that matches their chipset — the seven rows above are examples of the model-number/chipset pattern, not a limit on which builds these steps work for. If your exact model number or region isn't one of the seven shown, use the archive crosslink to find it, then follow the matching method here.