If SP Flash Tool fails with ERROR: STATUS_BROM_CMD_SEND_DA_FAIL, your Preloader is corrupted. You need a full firmware upgrade via SP Flash Tool's "Firmware Upgrade" option (not Download).
If this fails, your eMMC (internal storage) might be physically dead – that requires motherboard replacement. how to unbrick poco m5s
There is no key combo guaranteed. Instead, use the Test Point Method (hardware-level): If this fails, your eMMC (internal storage) might
Tools like Bypass EDL Auth by Miko or Xiaomi Auth Bypass exist but require patience. I can detail that if you're experienced. There is no key combo guaranteed
If the above feels too technical, you can pay for an authorized Mi Account:
Caution: Avoid scams. Use PayPal or trusted platforms only.