crazystick Posted July 31, 2019 Share Posted July 31, 2019 Going back through this thread then, here's what we have so far: User Chip Works Igor, Vlado SAMSUNG 728 K4B4G16 46D-BCK0 Yes (sometimes with, sometimes without bl1 edit - WTF??) constantius SEC 710 K4B4G16 46E-???? Yes (needs bl1 edit) sfalcon, AmirHG SEC 710 K4B4G16 46E-BCK0 Yes (needs bl1 edit) crazystick SEC 843 K4B4G16 46E BCMA Yes (needs bl1 edit) crazystick SEC 907 K4B4G16 46E BCMA Yes (needs bl1 edit) I'll try to test this later this week. @Vlado it looks like you have the same chip as @Igor but you needed the edit where he didn't which is odd. On his board the chip was printed SAMSUNG 728. Is it the same for you? @constantius would be good to fill in the ???s just for completeness. Link to comment Share on other sites More sharing options...
Vlado Posted July 31, 2019 Author Share Posted July 31, 2019 I have three version: 1. bad layout memory bus 2. noisy environment 3. not a quality Power Supply (noisy, so on). not sure Link to comment Share on other sites More sharing options...
Vlado Posted July 31, 2019 Author Share Posted July 31, 2019 I'll try to test this later this week. @Vlado it looks like you have the same chip as @Igor but you needed the edit where he didn't which is odd. On his board the chip was printed SAMSUNG 728. YES, same as Igor SAMSUNG 728 K4B4G16 46D-BCK0 PCB also same! Link to comment Share on other sites More sharing options...
crazystick Posted July 31, 2019 Share Posted July 31, 2019 5 minutes ago, Vlado said: I'll try to test this later this week. @Vlado it looks like you have the same chip as @Igor but you needed the edit where he didn't which is odd. On his board the chip was printed SAMSUNG 728. YES, same as Igor SAMSUNG 728 K4B4G16 46D-BCK0 PCB also same! Pretty strange then - sometimes your edit is needed and sometimes not! Link to comment Share on other sites More sharing options...
Vlado Posted July 31, 2019 Author Share Posted July 31, 2019 I have same PCB as Igor, but I need changes also!!! Without changes I have same problems as you Link to comment Share on other sites More sharing options...
Vlado Posted July 31, 2019 Author Share Posted July 31, 2019 this is strange Link to comment Share on other sites More sharing options...
Vlado Posted July 31, 2019 Author Share Posted July 31, 2019 Yes (sometimes with, sometimes without bl1 edit - WTF??) SUPER! Link to comment Share on other sites More sharing options...
constantius Posted July 31, 2019 Share Posted July 31, 2019 I am sorry I have already blurred these numbers on the bottom, 46E and I still do not know Link to comment Share on other sites More sharing options...
constantius Posted July 31, 2019 Share Posted July 31, 2019 52 minutes ago, crazystick said: - 46E Link to comment Share on other sites More sharing options...
Vlado Posted August 1, 2019 Author Share Posted August 1, 2019 So, continue. crazystick has SEC 843 K4B4G16 46E BCMA. BCMA mean 933MHz BCK0 - 800MHz and if crazystick has crash with 2GB then 1. memory chip can be fake, because 933MHz version just should work very well at 800MHz. 80% 2. bad layout pcb for memory. 15% 3. noisy environment. 5% Percentage is probability Value that changed in bl1 is frequency. 666MHz Original frequency was 800MHz Link to comment Share on other sites More sharing options...
Vlado Posted August 1, 2019 Author Share Posted August 1, 2019 BTW, when I worked with 800MHz 1GB some times I had freezy my PC (mostly when run in chrome 3-5 pages). After I change frequency PC work very stable with 2GB. Link to comment Share on other sites More sharing options...
constantius Posted August 1, 2019 Share Posted August 1, 2019 hi Quite similar situation occurs with the banana M2 A64 Allwinner. I have one of the beginning of production and the second of this year. On the first boot, everything about Armbian. On the second only to the kernel 4.14. Above 4.14 you have to use the image with pine64 +. I will not give you memory numbers because I have already covered with heat sinks. Link to comment Share on other sites More sharing options...
Vlado Posted August 1, 2019 Author Share Posted August 1, 2019 Can be also next situation: developers know about this problems and put in new revision 933MHz chip, but it not help. So -> bad layout. Link to comment Share on other sites More sharing options...
crazystick Posted August 1, 2019 Share Posted August 1, 2019 37 minutes ago, Vlado said: Value that changed in bl1 is frequency. 666MHz Original frequency was 800MHz Interesting. What speed is it using in the NanoPC-T3 image (the non + image)? That has been quite stable for me so far. Link to comment Share on other sites More sharing options...
Vlado Posted August 1, 2019 Author Share Posted August 1, 2019 I think 800MHz. And for you it has stable because you have 933MHz (better frequency version) Link to comment Share on other sites More sharing options...
crazystick Posted August 9, 2019 Share Posted August 9, 2019 Received another T3+ from FriendlyArm (ordered 2 weeks ago). This time the chip is SEC 907 K4B4G16 46E BCMA and it works with the edited image :-) Link to comment Share on other sites More sharing options...
Vlado Posted August 9, 2019 Author Share Posted August 9, 2019 Second board with 933MHz version chip not work with 800MHz. Situations is stable. For this CPU max. posible frequency for memory bus is 800MHz. Why FA use 933MHz version chip? Ran out of 800MHz memory IC? Link to comment Share on other sites More sharing options...
crazystick Posted August 9, 2019 Share Posted August 9, 2019 I guess so. If I understand correctly all these chips are EOL, maybe they can't get the other ones anymore. Link to comment Share on other sites More sharing options...
crazystick Posted August 12, 2019 Share Posted August 12, 2019 Just a little note to say that the `nand-sata-install` script doesn't transfer an edited bl1 from the SD to onboard eMMC, so you need to reapply the edit. If you only have CLI, you can do it like this (assuming you've booted from SD and run nand-sata-install already): printf '\x01\xde\x10\x10' | sudo dd of=/dev/mmcblk0 bs=1 seek=616 count=4 conv=notrunc Link to comment Share on other sites More sharing options...
sfalcon Posted August 13, 2019 Share Posted August 13, 2019 Hi All, Thanks for all the hard work. I've just tried the bl1 edit on my T3+ and it finally works now with 2gb mem. Link to comment Share on other sites More sharing options...
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