[TUTORIAL] LattePanda Bios Reflash Save LP from red light

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

Mon Oct 31, 2016 6:43 pm

So after adding a cooling system, I tested me reflashed LP with the flashed Default BIOS: yes it is now working. I have a screen; keyboard and mouse are online and I could reach BIOS menu. I also tried to update the BIOS to the Auto-Power-On BIOS through USB3 port method and it works also. Now I'm stuck with that forever blue screen "Just a moment...".

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LattePanda
Site Admin
Posts: 2467
Joined: Wed Jan 20, 2016 9:09 am

Tue Nov 01, 2016 7:26 am

hlide wrote:So after adding a cooling system, I tested me reflashed LP with the flashed Default BIOS: yes it is now working. I have a screen; keyboard and mouse are online and I could reach BIOS menu. I also tried to update the BIOS to the Auto-Power-On BIOS through USB3 port method and it works also. Now I'm stuck with that forever blue screen "Just a moment...".
hi hlide, good to hear from you again
at the risk of going slightly off topic, does this get you to a point where you are able to WINPE restore the system to its out of the box state?
Enjoy Tinkering with LattePanda ! :lol:

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

Tue Nov 01, 2016 10:47 am

Slightly OFF-topic:

New progress, I downloaded the Windows 64-bit version archive to "unzip" in the root of FAT32 usb key labeled WINPE and let LattePanda boot from it (just plug the usb key before powering LP). A long process occurs but at the end I was able get a working Windows 10 with small exceptions. At least Wifi works so I was able to access Internet. But Ethernet connection appears absent. I probably need to install some drivers from their GitHub.

@LattePanda
Yes, it looks so. I apparently didn't need a key after selecting "out-of-box" with no "generalize" at sysprep stage. I have some weird behaviors about the display manager (the display manager displays [1|2] that I never saw in my life instead of the usual [1][2] and only [1|2] accepts changing its resolution, both 1 and 2 appear to be the same screen as they cannot operate separately) but the HDMI screen is really okay even after setting its resolution to native one. I also have no Ethernet connection despite I have a wire connected to my router.

EDIT:
Good news: Ethernet is really working. I probably didn't fit it correctly. Maybe I didn't really need to install new drivers.

User avatar
Tsusheng
Posts: 11
Joined: Mon Sep 26, 2016 8:52 am

Sat Nov 19, 2016 8:31 am

I have successfully backup my 2GB/32GB LP board BIOS using Zzz5123's method.

The BIOS chip on my 2GB/32GB LP board is: 25LQ64CVIG

Image

Because it's a 1.8V chip, I used CH341A with a 3.3V to 1.8V convert board and then connect to the clip.

Image


Thanks Zzz5123 for the detailed descriptions.

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

Sun Nov 27, 2016 3:08 pm

Gosh! I did without the 3.3V to 1.8V converter! I could have killed the BIOS chip...

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

Sat Dec 10, 2016 12:34 pm

Gosh again!!!

I have now a blinking red led... I'm fed up with that sh*tty board! A complete failure.

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binkino
Posts: 3
Joined: Fri Jan 27, 2017 11:48 pm

Sat Jan 28, 2017 12:02 am

From the first day I had problems to start the LP ...
have the 4g/64g
took a long time, since it starts. Guessed it is normal?


Now I wanted to update bios, so it will auto start.
But did not boot from usb drive
had a look in the bios settings, if a setting would prevent from booting from usb
after that it does not more boot ...
so I found a youtube video and this forum postings


also here, red LED is on, blue LED blinks for short time, that is all.

Before I buy a programer ... some questions

is it possible to use the PICKIT3?
(have it here) and how to connect? Have no problem with it, to solder some wires to it

OR can I use this programer:
https://www.amazon.de/WINGONEER-Vorstan ... ammer&th=1
and what software can I use?
there is an offer with a connector and fast shipping inside germany (not 3 weeks from China)



In the last post, the member writes, the IC is 1.8v - but datasheet says 3.3v ?
http://www.alldatasheet.com/view.jsp?Se ... 4&sField=4



Thanks ;)

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paradoxum
Posts: 26
Joined: Sun Nov 20, 2016 6:41 pm

Sat Feb 04, 2017 10:18 pm

See next post
Last edited by paradoxum on Sun Feb 05, 2017 4:22 pm, edited 1 time in total.

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paradoxum
Posts: 26
Joined: Sun Nov 20, 2016 6:41 pm

Sun Feb 05, 2017 4:17 pm

Ok so I got this BIOS programmer:
https://imgur.com/a/8YI27

I'm waiting for another one I bought because I wasn't sure if it would work with the LP:
http://www.ebay.co.uk/itm/191674211030

And also this:
WINGONEER SOIC8 SOP8 Test Clip For EEPROM 93CXX / 25CXX / 24CXX in-circuit programming+2 adapters
https://www.amazon.co.uk/gp/product/B012VSGQ0Q/

Which I think I need too.

Can I fix my dead LP BIOS with these?

I could really use a better guide than the one in the first page to show me how because this is way out of my expertise. Can anyone help?

Edit: on the bios page it says "Note: LattePanda v1.1 default BIOS Beta can only use in LattePanda v1.1 which is using Z8350 CPU. You can distinguishing between both by the stick on the side of the board. " I couldn't see any CPU numbers because of heatsinks / fans over it, but it says "S70C Rev 1.1", does that mean I have the right board and the flashing the bios just failed and bricked it?

User avatar
paradoxum
Posts: 26
Joined: Sun Nov 20, 2016 6:41 pm

Thu Feb 09, 2017 11:38 pm

It was really easy, worked like a charm

saved my LP from being a brick.

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