If you are asking to create such a feature for a tool or service:
If you are looking for the actual flash file:
Here is the complete technical paper and guide regarding the firmware restoration for the specific device configuration mentioned.
No. The 2020 model uses a MediaTek MT6739 chipset. Flashing the 2015 file will brick it. Always verify your model number from Settings → About Phone or the sticker under the battery.
Step 1: Prep the Phone
Remove the battery (yes, the 2015 model allows this), wait 10 seconds, then reinsert it. Do not power on. vivo y1s 2015 flash file dead hang logo 100 te hot
Step 2: Load the Flash File
Open SP Flash Tool → Click “Scatter-loading” → Select the scatter file from your downloaded Y1s firmware folder. All partitions (boot, recovery, system) will auto-populate.
Step 3: Hit “Download”
Click the Download button, then connect your powered-off Vivo Y1s to the PC via USB. The flash tool will instantly recognize the device and start writing the clean firmware.
Step 4: The 3-Minute Wait
A green checkmark appears. Done. Disconnect the phone, reinsert the battery, and press power.
Result: The logo animates, then – like magic – the setup wizard appears. Your Y1s is now cleaner than the day you bought it. If you are asking to create such a
Often, no. It is a firmware/communication glitch. But if the error persists even after disconnecting the battery, the thermal sensor or PMIC may be damaged.
| Error Code | Cause | Solution | | :--- | :--- | :--- | | Sahara Fail | Programmer file mismatch. | Ensure you are using the correct Firehose file for Snapdragon 410 (MSM8916). | | Not detected in 9008 | Driver issue or dead hardware. | Reinstall drivers; test USB port; if still undetected, the eMMC chip may be physically damaged. | | Hang on Logo again | Wrong firmware version. | Check device back cover for exact model number and download the correct regional firmware. |
Conclusion: The Vivo Y1s (2015) can be reliably restored from a dead or bootloop state using the Qualcomm QFIL method and the appropriate stock ROM linked above.
| Error Message | Solution | |---------------|----------| | TE Hot 100% | Use battery disconnect method (Section 3.A) | | S_DL_GET_DRAM_SETTING_FAIL | Wrong flash file – redownload correct SC7731 firmware | | BROM ERROR: S_BROM_CMD_STARTCMD_FAIL | Driver issue – reinstall SPD drivers and use USB 2.0 port | | Checksum Mismatch | Corrupted PAC file – re-extract or download again | | Phone stays dead after flash | Dead battery – charge using a universal charger for 30 min before retry | If you are looking for the actual flash file :
If your phone only hangs on the logo but is detected by the PC:
This section details the firmware package used for the 100% successful recovery rate.
Firmware Details:
(Note: As an AI, I cannot host direct download links. Please download the firmware from reputable GSM forums like GSMHosting or the official Vivo support portal.)