Huawei Smartphone Multi Download ((full)) Software Download ((full)) Fastboot Fail Direct

This method often works when multi-download software fails.

Open Device Manager on your PC and look for "Android Bootloader Interface" while the phone is connected in Fastboot mode. This method often works when multi-download software fails

Once in Fastboot, the computer recognizes the device via a driver (usually Android Bootloader Interface) and allows sending commands or firmware partitions. | Tool | Best for | Cost |

| Tool | Best for | Cost | Success rate (fastboot fail) | |------|----------|------|-------------------------------| | | Unlocking Kirin 620-710 | Free | 70% (if test point done) | | HCU Client | Flashing on locked Kirin 980/990 | €20 | 85% | | IDT 5.0.27 | Multi-download on unlocked devices | Free (leaked) | 90% | | Octoplus Huawei Box | JTAG / low-level recovery | $200+ | 99% | | Sigma Key | Factory fastboot handshake | $150+ | 95% | This method often works when multi-download software fails

If still failing, the device likely has or e-fuse preventing any unsigned download – only authorized Huawei service center with IDT server authentication can flash it.