[TUTORIAL] LattePanda Bios Reflash Save LP from red light

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Aft3rburn
Posts: 48
Joined: Thu Aug 25, 2016 3:05 pm

Sat Sep 24, 2016 12:59 am

Aft3rburn wrote:
Zzz5123 wrote:When you program your chip be sure you connect it the right way round. Pin 1 on the IC is marked with a dot.
8.jpg
IC Pin 1
9.jpg
Hello, I do not mean to be offensive, but these two pictures are wrong.
In the upper picture, you have pins 1-4 lined up with the dot, pins 5-8 on the opposite side. On the lower picture, pins 1-4 are lined up with the dot (so if you think about it, the picture on top would have to be flipped both horizontally and vertically). On the lower picture, you have pin 8 directly across from pin 1. It should be pin 5 (I believe)

which picture should we trust? I'm thinking about following your instructions and attempting to re-flash my bios. Just thought I'd point this out:)
update- just ordered the chip-clip, and the programmer!:) wish me luck!:)

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LattePanda
Site Admin
Posts: 2468
Joined: Wed Jan 20, 2016 9:09 am

Mon Sep 26, 2016 6:29 am

Aft3rburn wrote:
Zzz5123 wrote:When you program your chip be sure you connect it the right way round. Pin 1 on the IC is marked with a dot.
8.jpg
IC Pin 1
9.jpg
Hello, I do not mean to be offensive, but these two pictures are wrong.
In the upper picture, you have pins 1-4 lined up with the dot, pins 5-8 on the opposite side. On the lower picture, pins 1-4 are lined up with the dot (so if you think about it, the picture on top would have to be flipped both horizontally and vertically). On the lower picture, you have pin 8 directly across from pin 1. It should be pin 5 (I believe)

which picture should we trust? I'm thinking about following your instructions and attempting to re-flash my bios. Just thought I'd point this out:)
as a rule, the dot on the chip will always be pin 1, so line up your clip accordingly
Enjoy Tinkering with LattePanda ! :lol:

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Aft3rburn
Posts: 48
Joined: Thu Aug 25, 2016 3:05 pm

Tue Sep 27, 2016 4:22 am

I apologize that I didn't make it clear. If you take the first picture, and rotate it twice, either direction, the pins don't line up. In the second picture, pin #5 is directly across from the bios chip, where in the first picture, pin #8 is directly across the bios chips from #1..

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LattePanda
Site Admin
Posts: 2468
Joined: Wed Jan 20, 2016 9:09 am

Tue Sep 27, 2016 7:44 am

Aft3rburn wrote:I apologize that I didn't make it clear. If you take the first picture, and rotate it twice, either direction, the pins don't line up. In the second picture, pin #5 is directly across from the bios chip, where in the first picture, pin #8 is directly across the bios chips from #1..
oh right i see, will get this updated
the illustrated diagram below is the one to follow as it is taken from the datasheet.
Enjoy Tinkering with LattePanda ! :lol:

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Aft3rburn
Posts: 48
Joined: Thu Aug 25, 2016 3:05 pm

Wed Sep 28, 2016 2:04 am

LattePanda wrote:
Aft3rburn wrote:I apologize that I didn't make it clear. If you take the first picture, and rotate it twice, either direction, the pins don't line up. In the second picture, pin #5 is directly across from the bios chip, where in the first picture, pin #8 is directly across the bios chips from #1..
oh right i see, will get this updated
the illustrated diagram below is the one to follow as it is taken from the datasheet.
LattePanda,
I want to publicly and sincerely THANK YOU for your support! I know that your job seems thankless somedays, but please know that we all here on the forum THANK YOU and APPRECIATE your help so much!:)

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LattePanda
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Posts: 2468
Joined: Wed Jan 20, 2016 9:09 am

Wed Sep 28, 2016 7:29 am

Aft3rburn wrote:
LattePanda wrote:
Aft3rburn wrote:I apologize that I didn't make it clear. If you take the first picture, and rotate it twice, either direction, the pins don't line up. In the second picture, pin #5 is directly across from the bios chip, where in the first picture, pin #8 is directly across the bios chips from #1..
oh right i see, will get this updated
the illustrated diagram below is the one to follow as it is taken from the datasheet.
LattePanda,
I want to publicly and sincerely THANK YOU for your support! I know that your job seems thankless somedays, but please know that we all here on the forum THANK YOU and APPRECIATE your help so much!:)
nice of you to say, comments like that make all the difference :)
Enjoy Tinkering with LattePanda ! :lol:

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Aft3rburn
Posts: 48
Joined: Thu Aug 25, 2016 3:05 pm

Fri Oct 14, 2016 9:15 pm

I would like to post pictures of how I followed this process (and altered some steps to make it all work together). I love my LP!!!:)

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hlide
Posts: 65
Joined: Wed Jun 01, 2016 11:15 pm

Sun Oct 23, 2016 9:44 pm

I have my LattePanda reflashed using almost the same reprogrammer. Si I did first read the original content, then try to compare with a bios image we can find in GitHub. Too many differences, no clue about what must be the Windows 10 key I may need to copy in the bios image. I flash the bios image without the change for Windows 10 key. I still need to find some proper ways to help cooling that cpu before running it again with the new bios image and see if I can boot fine. Then I would need to see if Windows 10 can run or be installed without the need of this key... Aft3rburn, can you describe your issue and how you fix it?

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hlide
Posts: 65
Joined: Wed Jun 01, 2016 11:15 pm

Sun Oct 23, 2016 10:03 pm

My programmer is a CH341A:
615Oix+TdyL._SL1010_.jpg
615Oix+TdyL._SL1010_.jpg (88.93 KiB) Viewed 6973 times
I followed this video and grab the software archive which works fine with this programmer:
https://www.youtube.com/watch?v=5NYe21nFSDI
And the other can help you for saying how to install the driver:
https://www.youtube.com/watch?v=L0ChYNwunUE

I didn't need to watch out the pictures in the first page, I was almost prepared with those videos. As for the test clip, you should find the wire of unique color which normally is for pin 1 and be sure it clips the pin 1 (the pin closest to a dot on the chipset). The other end of the clip test should also follow the same trick.

I didn't have issue for reading or programming.

The next task will be to run LP to see if BIOS is working back. But I still need to find a valid hardware solution for cooling this CPU in first lieu.

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toxicity
Posts: 6
Joined: Thu Sep 22, 2016 12:56 pm

Sun Oct 23, 2016 10:59 pm

I used a Bus Pirate and flashrom to flash my Lattepanda, it works great. Here is a good tutorial for that: https://www.flashrom.org/Bus_Pirate
The Pin Layout of the GD25Q64 is similar to that one in the Tutorial, so you can use it too to connect the Chip to the Bus Pirate.

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