Pocket beagle not booting

Hi, I’m a newbie with beagle board and I have a problem with my pocket one.
I did all according to the quick start guide.
When i plugged it to my pc all 4 leds lighted up sequentially but I was waiting for 1 minute and nothing happened. There wasn’t any new drive appearing in my windows explorer.
Unplugged it without turning it off and plugged it again. Same bahavior.
After a lot o sd card flashing and tries to boot, things got worse.
Now when i plug the board only user0 led lights up and stays open.
Have I damaged it ? How can I check if it has damage?
Can I fix it ?


What image did you flash to the uSD card?
What tool did you use to flash the image to the uSD card?



I have used “AM3358 Debian 10.3 2020-04-06 4GB SD IoT” image file and I used “rufus 3.1” to flash the image.
As I said, all 4 leds lighted up sequencially and after a while the user0 led flashed like a heartbeat and user1 led kept flashing randomly.
That is normal as I have read, but still in my computer no device was detected.

After some unplugging and plugging, I used “Etcher” to flash the image.
Then I flashed some older images like “Debian 9.9 2019-08-03 4GB SD IoT” and “AM3358 Debian 10.0 2019-07-07 4GB SD IoT” with “Etcher” too.
I have tried a different sd card but nothing changed.
Yesterday when I plugged Beagle in the usb port, an “RNDIS…” message appeard but not any connection and only user0 led stays constantly lit.
User0 led is about kernel, so is there any damage inside the chip?

Στις Σάββατο, 5 Δεκεμβρίου 2020 στις 2:39:17 π.μ. UTC+2, ο χρήστης jonn...@gmail.com έγραψε:

If the LEDs are not blinking as expected, that does not sound good. If you have a FTDI cable, you could try to connect it to the PB as shown on the following page to see if you get any messages related to the issue:

I’m assuming you are not seeing a COM port active for the PB on your Windows PC, correct?



As I said I’m a newbie
Luckily I have an FTDI cable , but what software should I use as a console to read data from PB? I have Windows 10.

Actually, when I plug PB to my PC it makes the sound of connecting and a COM port appears in the Device Manager, but then another sound of disconnecting. This thing repeats for 10 times and finnaly the COM port disappears.

Στις Σάββατο, 5 Δεκεμβρίου 2020 στις 7:12:18 μ.μ. UTC+2, ο χρήστης jonn...@gmail.com έγραψε:

must be a 3.3v cable

Note, I am not tech support. I’m just a guy trying to help you solve your issue.

If you search for ‘Windows 10 ftdi’ you should find something that will point you in the right direction.

This might help though.

You can use something like TeraTerm, PuTTY or MobaXterm on Windows. I prefer PuTTY.


You can use putty

Thank you all…!!

Στις Σάββατο, 5 Δεκεμβρίου 2020 στις 9:51:09 μ.μ. UTC+2, ο χρήστης vinicius...@gmail.com έγραψε:

Well, I didn’t have an FTDI cable…!! But I had an Arduino Uno which I used as a Serial monitor.
With an old image in the sd card I got this:PBB_report.jpg

Στις Σάββατο, 5 Δεκεμβρίου 2020 στις 10:11:54 μ.μ. UTC+2, ο χρήστης John Bacas έγραψε:

Then I flashed the most recent image and got this:

Στις Κυριακή, 6 Δεκεμβρίου 2020 στις 12:14:54 π.μ. UTC+2, ο χρήστης John Bacas έγραψε:

What is thei age you are using ?


Can you grab the whole serial output which includes what is coming after the ‘omap_hsmmc_send_cmd’?.

Also, check that there are no pins damaged in the uSD card slot on the PocketBeagle.





Looks like a dead microsd, or a bent pin in the metal cage holder…



if it is a bent pin in the card holder how can I fix it ?? I can barely see inside the card holder…!!!

Στις Κυριακή, 6 Δεκεμβρίου 2020 στις 1:19:06 π.μ. UTC+2, ο χρήστης RobertCNelson έγραψε:

So I suppose this is the only solution:


Στις Κυριακή, 6 Δεκεμβρίου 2020 στις 1:25:19 π.μ. UTC+2, ο χρήστης John Bacas έγραψε:

@ Vinicius
I’m sorry but I was confused with your question. I thought you were asking sth about “age”.
ok, now I got it. The image I use is the latest one “AM3358 Debian 10.3 2020-04-06 4GB SD IoT”

@ jonn
Sorry, but I had erased the serial monitor log

The sd card works fine in a camera so I believe it is the reader’s fault.

Στις Κυριακή, 6 Δεκεμβρίου 2020 στις 6:44:55 μ.μ. UTC+2, ο χρήστης John Bacas έγραψε:

I don’t think the whole serial output is needed at this point. I would go with Robert in that the reader may have an issue. See if you can get a light to shine down the uSD card slot and see if there is a damaged pin. I would not attempt to remove the cover of the reader unless you are really skilled at soldering. There are too many components close to the reader where this could cause more harm than good.

You might try contacting the folks you purchased the board from and see if they can get you a replacement.