Infinix Smart 7 HD (X6516) The phone doesn't boot
Infinix Smart 7 HD (X6516) The phone doesn't boot
04-08-2026, 09:38 AM
Hello everyone.
I have an Infinix Smart 7 HD (X6516) with Unisoc SC9863A chip. The phone doesn't boot (stuck on logo), I need to flash a clean stock firmware.
What I've already tried:
Bootloader is unlocked (OEM unlocking enabled).
Tried flashing via SPD Flash Tool (Research/Upgrade/Factory) — error [UB1254] Software has not supported this feature.
Tried 5 different versions of SPD Flash Tool — same result.
Tried UnlockTool — it flashes small partitions, but fails on super.img with Out of memory while expanding memory stream (32-bit limitation?!).
Tried spd_dump with CVE-2022-38694 exploit — got CHECK_BAUD FAIL and FDL2: incompatible partition.
My firmware: X6516RU-SE668SD-SGo-RU-230303V114
Questions:
How to flash this phone with Auth protection? Which tool works?
Where can I download a working Carlcare Flash Tool (aka Transsion Software Download Tool) for Infinix X6516?
Is there a ready-made fdl1-dl.bin and fdl2-dl.bin for this model to use with spd_dump?
Or is the only option paid tools like UMT SPD Tool / Hydra Tool?
Thanks in advance for any help!
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