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For those unable to boot from SD

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By Tijok, Junior Member on 16th April 2014, 12:53 AM
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Hi Everyone,

First time writer, long time lurker. I had a bear of a time getting my BNTV250A to boot from the SD card, and wanted to share my story to help anyone else who might be having the same problems. If anyone has interest I can share the whole story, which spanned two full 8-hour days at work trying to get this darn thing to boot properly, but I'll cut to the moral.

CHECK THAT YOUR FILES ARE GOOD. This will be mostly irrelevant for those that use the SD image method, but I even had a corrupted image download, so that method isn't completely foolproof (although now that I look back on it, I may have just borked the image write).

This was the main source of my pain, no matter how many times you reformat a drive, apply the appropriate flags, and use every drive formatting program under the sun, it won't work if your files are corrupted, so for those who might benefit, here's some info:

The four key files that most methods use, in order of importance:
  1. MLO - 38,356 bytes
  2. u-boot.bin - 179,812 bytes
  3. flashing_boot.img - 167,936 bytes
  4. boot.img (not every method uses this) - 4,771,840 bytes

Also, because this would have saved my life had I had it earlier, here are the MD5 sums for these files:
  1. MLO - 979fa71c9ee33ca9690df809c71e1991
  2. u-boot.bin - 1070cd90b3d57a47cdc8c22b00243ff7
  3. flashing_boot.img - 2e2c78fbba3ad95bb4687279d92040a9
  4. boot.img - 97a97883a6869fc02b3db625c62d68fc

Good luck out there everyone, and let me know if you run into this issue, and I can help in any way!

And so many others, thank you everyone!
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