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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.
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).