Hello,
Have you tried removing and reinstalling the CMOS battery and then checking if there is HDMI output?
Yes, I did. I removed it (and the power cord) over night and plugged it in the next morning… The device is still dead (i.e. no HDMI-output)
This is the second device where this happens. I had the first one replaced by the seller… Maybe there should be a warning on the seedstudio wiki page, that the BIOS update is not for the new v2 devices.
I have a J-Link programmer that supports programming these chips. I just need the bin file for flashing.
@Seeed_Seraphina @Bruce.Qin @Seeed-Liu
Hi,
do you think I could get the binary file/documentation?
Thanks in advance!
Please release it to me, too.
I’m sorry to keep you waiting for such a time. We send it to you by message
No problem. Thank you very much! I’ll try it then.
@Bruce.Qin @Seeed_Seraphina Hi guys, I installed the new bios chip (it took a while but I was moving to a new place and didn’t have the time to check it) you sent me and now the Odyssey boots up, but now I remembered that I also updated the Embedded controller with the files in the wiki that I guess are only good for the v1 and not for the v2. Can I fix it? Can you send me the right EC files?
Right now the Odyssey boots up but it doesn’t recognize the NVMe nor the SSD I plugged with SATA
I’m sorry to keep you waiting for such a long time. We send it to you by message
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Good morning everyone. I am a new user here. I bought J4125 v2, but after the BIOS update, nothing works 
only the blue LED on the switch is on. I’m asking for help, I’m asking for a BIOS dump from one of you. I will be grateful for your help. Thanks Matt
@Bruce.Qin - Thank you very much for your quick response on this matter. I received your *.bin image and immediately after that I was able to revive my Odyssey 
Thank you once again.
Enjoy your project. 
Hello, My J4125 is also not booting to OS, is it possible to get the bios dump as well? Ive been trying to get my odyssey working for months…Please help! Thanks in advance.
Hello @grnch .
You can try unplugging the RTC and discharging it for 1 minute. Then plug it back in and power it up to see if it enters the BIOS. if it’s OK, you can reset the boot items in the BIOS.
BTW, is your Odyssey J4125 a v1 or v2 version?
When will there be an update of the firmware for the J4125v2?
On the wiki there still are only updates for the v1 version.
Thanks in advance
@Bruce.Qin @Seeed_Seraphina I apologize for the necro… My board isn’t bricked, but locked behind a BIOS password that I do not know. Can I get the firmware for the J4125v2 so I can use my device? And documentation on how to flash it would be amazingly helpful. Thank you!
Also apologies for the edits and pings, just anxious to get this darned thing working 
In this case, you need to remove the FLASH chip of the BIOS and use an external programmer to reprogram the firmware, if you have a programmer on hand. 
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The current firmware released is a stable version that has undergone multiple tests, and we have not received any negative feedback from users. If there are any bug reports, we will follow up and provide firmware downloads. Thank you for your attention.
Thank you for the information, are there any specific ones recommended? And do you have the bin file I could use for this?
When programming, pay attention to the model of your BIOS chip and the first pin. For V2, you only need to open the casing of the BIOS chip to remove it. Ours support team will sent the firmware to your mail box, pls check it later.
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Thank you for your help! Waiting on my programmer to arrive. For anyone reading in the future, I purchased this one: Amazon.com
I’ll follow up here to confirm everything worked smoothly.