Dumping RAM with gen-blob

Using gen-blob it is possible to dump the phone RAM to retrieve the kernel messages in order to diagnose and fix a crash.

When you experience a kernel crash:

1. Remove the battery:
2. Reinsert it immediately holding the keys to enter bootloader mode (see Bootloader#Enter_the_bootloader).
3. Load gen-blob via usb:

   $ boot_usb setflag usb
   $ boot_usb gen-blob 0
   

4. Dump the ram (32 MiB):

   $ boot_usb read 0xa0000000 33554432 memdump.bin
   $ boot_usb off
   

5. Extract the kernel messages:

   $ strings memdump.bin | grep '^<[0-9]>\[[\ \.0-9]*\]'