Nemavio Posted May 5, 2022 Share Posted May 5, 2022 Hello, I received recently an Helios64 from a new friend, However, when I get home, I plug it in, turn it on (already I have to press the power button for 4 seconds to get some life) and I get the following LEDs lit up: - LED1 - LED2 - LED3 - LED5 - LED6 i got nothing on the serial line (tested on MacOS and Windows), and no reaction when I do quick and long press on Recovery nor Reset. Is there some electronic schematic that could help me to debug hardware or procedure to get JTAG access to the RK3399 ? Regards, 1 Quote Link to comment Share on other sites More sharing options...
allen--smithee Posted May 6, 2022 Share Posted May 6, 2022 Hello and Welcome, in diagnostic Mode, 0. remove all hard drives SD/PCI/Sata, check the position of all jumpers on the motherboard, and the connections inside the case. 1. remove the metal backplate and plug your USB C cable directly into the helios64 motherboard if you get a putty access in COM it is stupidly a known problem. 2. take a valid Armbian image, install it with the Win32DiskImager program on a SanDisk SD card, put it in helios64, plug Helios64 in ETH0 on your network, turn it on and wait for it to flashled System, run a network diagnostic, get the ip of the nas and run SSH on it. 3. Call your friend and ask him what the hell happened with the Helios64. 0 Quote Link to comment Share on other sites More sharing options...
Nemavio Posted May 8, 2022 Author Share Posted May 8, 2022 Hello, Thank you for your answer. For a reason I don't get, but I had to strap Jumper P10 and P11, and I got something on the serial line. https://wiki.kobol.io/helios64/jumper/ The bootloader appears and linux starts after 2-3 minutes. We can say that it is solved but I don't understand why. 1 Quote Link to comment Share on other sites More sharing options...
allen--smithee Posted May 11, 2022 Share Posted May 11, 2022 Hello, your helios64 has 3 options to run the bootloader (SPI, Emmc and SD) without a proper bootloader the motherboard will light up some tension LEDs... Your helios64 is at this moment only a 5w toaster, because no instructions for the support of modules and hardware nodes are executed at startup. we can assume that if the jumpers were missing, that maybe your friend was using a homemade boot code on the SPI (not armbian) or failed to put the jumpers back after a manipulation and the SPI was empty, the board was powered up and that's all. Nevertheless, you are now in control of your Helios64 with Bootloader on SD card slot. 0 Quote Link to comment Share on other sites More sharing options...
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