VODOO - Bootfähige Recovery SD Karte für AmLogic (Linux)

07. April 2019

Bootfähige Recovery SD Karte für AmLogic (Linux)

First we’ll need to have a tool to extract some files from the firmware. Create aml-upgrade-package-extract.c with the code below which http://freaktab.com/forum/tv-player-support/amlogic-based-tv-players/s912/others-aml-s912/firmware-roms-tools-by/602802-aml_upgrade_package-img-extract'); return false;">I found on Freaktab too and slightly modified it to parse the firmware filename:

#include <errno.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>

uint32_t convert(uint8_t *test, uint64_t loc) {
  return ntohl((test[loc] << 24) | (test[loc+1] << 16) | (test[loc+2] << 8) | test[loc+3]);
}

void main (int argc, char **argv) {
  FILE *fileptr;
  uint8_t *buffer;
  long filelen;

  FILE *f;
  char *filename;
  uint64_t record;
  uint64_t record_loc;
  uint64_t file_loc;
  uint64_t file_size;

  if (argc <= 1) {
    printf("Usage: %s [firmware-file-name]\n", argv[0]);
    exit (0);
  }

  fileptr = fopen(argv[1], "rb");
  fseek(fileptr, 0, SEEK_END);
  filelen = ftell(fileptr);
  rewind(fileptr);

  buffer = (uint8_t *)malloc((filelen+1)*sizeof(uint8_t));
  fread(buffer, filelen, 1, fileptr);
  fclose(fileptr);

  for (record = 0; record < (uint8_t)buffer[0x18]; record = record + 1){
    record_loc = 0x40 + (record * 0x240);

    filename = (malloc(32));
    sprintf(filename,"%s.%s",(char *)&buffer[record_loc+0x120], (char *)&buffer[record_loc+0x20]);

    file_loc = convert(buffer,record_loc+0x10);
    file_size = convert(buffer,record_loc+0x18);

    f = fopen(filename, "wb");
    if (f == NULL) {
     printf("ERROR: could not open output\n");
     printf("the error was: %s\n",strerror(errno));
     free(filename);
     continue;
    }
    fwrite(&(buffer[file_loc]), sizeof(uint8_t), (size_t)file_size, f);
    fclose(f);
    free(filename);
  }
  free(buffer);
}

Now compile the tool with gcc:

gcc aml-upgrade-package-extract.c -o aml-upgrade-package-extract

and run the thing on the firmware file:

./aml-upgrade-package-extract aml_s912_q6330-R-BOX-PRO-3gddr-mac-20161015.img

It will extract a bunch of files:

jaufranc@FX8350:~/edev/amlogic/s912$ ls
aml_s912_q6330-R-BOX-PRO-3gddr-mac-20161015.img  logo.PARTITION
aml_sdc_burn.ini                                 logo.VERIFY
aml_sdc_burn.UBOOT                               manifest.xml
aml-upgrade-package-extract                      meson1.dtb
aml-upgrade-package-extract.c                    platform.conf
bootloader.PARTITION                             recovery.PARTITION
bootloader.VERIFY                                recovery.VERIFY
boot.PARTITION                                   system.PARTITION
boot.VERIFY                                      system.VERIFY
DDR.USB                                          UBOOT.USB
keys.conf

You’ll just need aml_sdc_burn.ini and aml_sdc_burn.UBOOT, plus the IMG file itself to create a bootable mass storage device.

Now find the device for your micro SD card (formatted with FAT32) with lsblk:

lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 931.5G  0 disk 
├─sda1   8:1    0 915.9G  0 part /media/hdd
└─sda2   8:2    0  15.6G  0 part 
sdb      8:16   0 111.8G  0 disk 
└─sdb1   8:17   0 111.8G  0 part /
sdc      8:32   0 931.5G  0 disk 
└─sdc1   8:33   0 931.5G  0 part /media/jaufranc/SEAGATE EXTENSION
sdd      8:48   1   3.8G  0 disk 
└─sdd1   8:49   1   3.8G  0 part /media/jaufranc/6106-E11B
sr0     11:0    1   630M  0 rom  /media/jaufranc/CanonEOS285W
loop0    7:0    0    75M  0 loop /snap/ubuntu-core/423
loop1    7:1    0   4.3M  0 loop /snap/canonical-livepatch/17
loop2    7:2    0   4.3M  0 loop /snap/canonical-livepatch/15

In my case it’s /dev/sdd, but I’ll use /dev/sdX in the instructions below, just change the command with yours.

sudo umount /dev/sdX*
sudo dd if=aml_sdc_burn.UBOOT of=/dev/sdX bs=1 count=442
sudo dd if=aml_sdc_burn.UBOOT of=/dev/sdX seek=1 skip=1 bs=512
sync

and finally re-mount the SD card/flash drive, copy the firmware file and aml_sdc_burn.ini to the root of the device, and rename the firmware to aml_upgrade_package.img to match the string in aml_sdc_burn.ini:

cp aml_sdc_burn.ini aml_sdc_burn.UBOOT [device-mount-point] 
cp aml_s912_q6330-R-BOX-PRO-3gddr-mac-20161015.img [device-mount-point]/aml_upgrade_package.img 
sudo umount /dev/sdX*

Now make sure no other USB devices or SD card are inserted in the TV box, and insert your bootable (micro) SD card or USB flash drive into the TV box. If your TV box is fully bricked, you have nothing to do, and the update should start straightaway, but if it is partially bricked or just working fine, you still need to press the recovery button, apply power, and release the button in order to enter recovery mode. The upgrade should then start automatically.

Patiently wait for the update to complete and you should be all good. Please note that I first tried with a USB flash drive, and the method did not work. Once the update is complete, you’ll see the “Android success” logo.

: HowTo; Android; Zugriffe: 1892

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Bootfähige Recovery SD Karte für AmLogic (Linux)

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