Used `dd` on the /dev/mtd firmware, was damage done, any way to recover?

[rvalles]

Easiest might be to boot from that sdcard, stop u-boot’s autoboot, and follow these instructions.

Guide: Upgrading firmware with only a serial/uart connection via u-boot

Please use a terminal that supports YMODEM file transfers. For Windows there is Tera Term. On Linux I recommend minicom, but ensure lrzsz is also installed, as the file transfer feature uses it. Set up connection at 115200 bps, 8N1. First, prepare the files you want to flash, such as from the latest release: https://github.com/starfive-tech/VisionFive2/releases u-boot-spl.bin.normal.out visionfive2_fw_payload.img Boot in flash mode, without a sdcard inserted, or otherwise interrupt u-boot’…