POWER METER:What to do if firmware upgrade fails?

  ① Exit the App
  ② Reopen it
  ③ Click [Settings] in the upper right corner
  ④ Enter the beta invitation code: Ga6Mwyo06UvrXE (press Enter key)
  ⑤ Return to the homepage
  ⑥ Reconnect the power meter spider
  ⑦ Enter DFU mode
  ⑧ Long press [Official Firmware Upgrade] and select the correct model:
      Gen 1: XPOWER-S GEN1
      Gen 2: XPOWER-S GEN2