U-Boot 2020.04-at20 (Oct 24 2023 - 04:16:30 +0000) CPU: i.MX6ULL rev1.1 at 396 MHz Model: Atmark Techno Armadillo-IoT Gateway A6E Board DRAM: 512 MiB WDT: Started with servicing (10s timeout) PMIC: PFUZE3000 DEV_ID=0x30 REV_ID=0x11 MMC: FSL_SDHC: 0, FSL_SDHC: 1 Loading Environment from MMC... *** Warning - No block device, using default environment In: mxc_serial Out: mxc_serial Err: mxc_serial switch to partitions #0, OK mmc1 is current device flash target is MMC:1 MMC card init failed! *** ERROR: Can't read GPT header *** *** ERROR: Can't read GPT header *** find_valid_gpt: *** ERROR: Invalid Backup GPT *** Net: Warning: ethernet@2188000 using MAC address from ROM eth0: ethernet@2188000 Fastboot: Normal Saving Environment to MMC... Writing to redundant MMC(1)... failed Failed (1) Normal Boot Hit any key to stop autoboot: 0 switch to partitions #0, OK mmc1 is current device =>