[HELP] Mi 5S Plus (natrium) stuck at 99% Mi Unlock for 2 months — Need ENG ROM or unlocked aboot/devinfo dump

Hi everyone,

I have a Mi 5S Plus (natrium) running MIUI 11 China ROM. Been trying to unlock bootloader for 2 months.

Problem: Mi Unlock fails at 99% with "add device in mi unlock status" error on every version from v3.5 to v7.2.

I need ANY of these: ✅ Engineering ROM for natrium ✅ Unlocked emmc_appsboot.mbn ✅ Unlocked devinfo dump

I have QFIL + correct firehose ready to flash via EDL immediately.

Please help! 🙏