Since the device is "bricked" or has none recovery, you must force it into bootloader download mode:
This is called “None SOS” for a reason. If you flash this patched firmware and your main image is corrupted (bad flash, power loss during write, kernel Oops), the device will not recover. allupgrade aml920 4g 512m none sos patched
Without the SOS partition:
You will need a JTAG programmer or a serial TTL adapter to unbrick the device. For a $15 dongle, that’s not worth it. For a $500 industrial gateway, it might be. Since the device is "bricked" or has none
The combination allupgrade aml920 4g 512m none sos patched is not a mainstream release. It does not come from Amazon, Google, or Rockchip. Instead, it is used in three primary scenarios: You will need a JTAG programmer or a