Flash Mode Of SP Flash Tool

Download Only (default mode) - This mode will only write the selected partitions without formatting them. Only this mode allows you to flash selected partitions, not only all of them. This mode is recommended if you want to just update a well-working system with keeping your user data (uncheck the userdata partition) or if you want to flash single partitions like a custom recovery, without touching the whole system.


Firmware Upgrade - This mode will first format all partitions in the list, then flash them. In this mode all partitions will be flashed, so you will lose your user data and your phone will start with its factory data defaults. This mode is recommended if you want to repair a damaged system or if you perform an Android version upgrade or downgrade. Overall if you plan to erase your user data (or you don't need to keep it), it's always better to choose this mode for a cleaner result.


Format All + Download - Never use it!!! This mode will format not only the partitions loaded from your ROM package but the whole flash chip, so even such hidden partitions like the nvram will be erased. As a result, you'll lose your IMEI numbers or even some functionality of the hardware, and you might not be able to recover everything. Flashing in Format All + Download mode will autommatically void your warranty! You can use this mode only if your device is bricked (can't even power on), in very special cases if an authorized expert specifically instructed YOU to do that. Never experiment with this mode!

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