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These would result in your phone being unable to detect your SIM card’s network

Some roms / tools wipe or corrupt your EFS / QCN partition resulting in Null or Invalid IMEI, Baseband, Serial Number etc.

If you can, try to backup your phone’s QCN / EFS partition before flashing any rom (whether stock or custom).

If you get the Sahara Fail error then try a different programmer file While its best you use a firmware which includes a programmer file, you can (in severe cases) use the programmer file for a Qualcomm phone with the same chipset as yours.

Some Qualcomm firmware do not contain programmer files (prog_emmc_firehose_****.mbn).To flash a single file e.g recovery.img, select under search path the folder that contains ONLY the single file.

Step 11: You should get Download Succeed Finish Download once QFIL has successfully flashed the firmware. Step 10: Click Download, QFIL should start flashing the firmware, Do Not interrupt Step 9: Another Window will automatically pop up, highlight the patch() file then click Open Step 8: In the Window that pops up, highlight the rawprogram() file then click Open Step 6: Under Select Programmer, click Browse. In the Window that pops up, highlight the loader file (usually named prog_emmc_firehose_****.mbn) and click Open Step 6: Under Select Build Type, tick Flat Build No Port Available should change to Qualcomm HS-USB QDLoader 9008 Step 5: Connect the device to the PC while in EDL Mode (device should be in EDL before connecting to pc). Step 4: QFIL is launched, you will see the below screen on your computer: After extracting, you will be able to see the following files: Step 2: Download and extract Qualcomm Flash Image Loader (QFIL) on your computer. QPST Flash Tool v2.7.Step 1: Download and install Qualcomm USB Driver on your Computer(If you have already installed the Qualcomm USB Driver on your computer, skip this step). If you face any issues with the latest version, do give the other versions a try. Please note that we recommend using the latest version of the tool. We have multiple versions of the QPST Flash Tool available for download.