I changed my GPT (in the wrong way) and seem to have put one SOM in this mess:
Android Bootloader - UART_DM Initialized!!!
 welcome to lk
 SDHC Running in HS200 mode
 Done initialization of the card
 MBR signature does not match.
 MMC Boot: MBR read failed!
 Error reading the partition table info
 panic (caller 0x8f61b644): ASSERT FAILED at (target/msm8916/init.c:203): 0
 SCM call: 0x2000110 failed with :ffffffff
 HALT: reboot into dload mode...
 SCM call: 0x82000901 failed with :ffffffff
MBR fail, is concerning.. Is there a way to recover from SD? Rescue doesn't seem to work on this SOM - on another one yes. Am I stuck?