Working in a repair company, I try to copy NOR and NAND data from a functionnal board to another one that is unable to boot. Of course, no access to original project as the manufacturer does not exist anymore.
Currently I only have a serial link to U-Boot bootloader. U-boot starts but the linux boot fails. I have network connectivity and already tried to load a file to RAM via TFTP.
Could someone advise me a set of U-Boot commands to use to copy flash devices (serial or Ethernet link)?
Or does it exist a convenient software tool to do this? (for free in a first time as it is only a try)