: The A20s uses a slightly unusual GPT layout. Inferior Firehose loaders misidentify critical partitions like modemst1 , persist , or sec_efs . Writing to the wrong offset corrupts the IMEI or cellular radio—a nightmare to fix.

The Samsung A20s runs on the Qualcomm SDM429 (Snapdragon 429). Due to Samsung’s aggressive security (Samsung Knox and OEM Lock), many Firehose loaders circulating online are either:

Select the rawprogram0.xml and patch0.xml files from your firmware folder. Click "Download" or "Flash." Critical Safety Tips

Samsung uses binary numbers (Bit 1, Bit 2, Bit 3) to indicate bootloader versions. If your phone is on A207FXXUCVG2 (Bit 4), but your Firehose loader was patched for Bit 1, you will get a Sahara Protocol error .