Greetings to all. I need to flash the bios of an ASUS x509M. I have two CH341A and EZP 2019+ programmers that do not recognize the chip which is: Gigadevice 25LB64CSIG (I have the adapter for 1.8 v.). How could I do? Can I use another programmer or perhaps an equivalent chip?
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Thanks mon2 I found the solution by reading the post.I programmed the chip with the CH 341A but without the 1.8v adapter.It didn't work with EZP 2019.The CH 341A recognized the chip as GD25Q64 powered at 2.98 v. voltage measured on pins 4 and 8. The PC with the new bios began to charge the battery and started up. Thanks againComment
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Hi,
I would like to thank you.
This was usefull for me.Comment
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ut-norm If using CH341a and converter 1.8v, does it detect the chip? I afraid without using converter it would be burn the chip. May i know which ch341a programmer version you be using to reprogram the chip?Comment
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I am using linux flashrom and I have this problem.
Code:sudo flashrom --programmer ch341a_spi --read read01.bin
Code:flashrom unknown on Linux 6.8.0-51-generic (x86_64) flashrom is free software, get the source code at https://flashrom.org Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns). Found GigaDevice flash chip "GD25LQ64(B)" (8192 kB, SPI) on ch341a_spi. Reading flash... cb_out: error: LIBUSB_TRANSFER_ERROR cb_in: error: LIBUSB_TRANSFER_ERROR cb_in: error: LIBUSB_TRANSFER_ERROR ch341a_spi_spi_send_command: Failed to write 4265 bytes cb_in: error: LIBUSB_TRANSFER_ERROR cb_in: error: LIBUSB_TRANSFER_ERROR cb_in: error: LIBUSB_TRANSFER_ERROR cb_in: error: LIBUSB_TRANSFER_ERROR Read operation failed! FAILED. cb_out: error: LIBUSB_TRANSFER_ERROR enable_pins: Failed to write 4 bytes
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To me, sounds like a Linux related local issue since the LIBUSB transfers are not being processed. Test with another distribution.Comment
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I have updated Linux Mint 22 and I tried different USB ports.
Tomorrow I will try a completely different PC.
The log shows that the programmer identified the chip, but could not read the data.Comment
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Common SPI bios chip programming Questions and Answers
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Q: I have a bios request,i can`t post my backup as i can`t read from the chip.
A: If you can`t read from it how do you expect to write to it ?.
Q: Why is my bios chip unreadable ?.
A: The programmer is faulty or has a worn or broken zif socket.
The USB cable is frayed,connector pins worn or some other physical damage.
Not enough amperage or voltage to power the programmer properly.
Bad...09-02-2021, 04:40 PM -
This is a guide that I am writing for helping others to replace their MEC1503 EC chip if it breaks (or to get around an inconvenient prompt to the BIOS). This forum has been extremely helpful to me so I would like to contribute to help others. I will tell you right now that this task is very difficult to do. You MUST have experience and tools to do precision micro-soldering, BGA reballing, trace repair, and general laptop repair skills.
There are some specialty tools needed to do this task. The replacement MEC1503 chips can be acquired from Aliexpress. Do not buy the bare chips as... -
Before I go further down the rabbit hole, I'd like to know if I have created a dead-end in my repair process. I am attempting to reflash my Lenovo X1 Extreme Gen 2's BIOS chip after a power interruption corrupted the BIOS data during an update.
I do not have backups of the data I pulled off the chip using a CH341A 24 25 Series EEPROM https://www.amazon.com/Organizer-Soc...Q%3D%3D&sr=8-5
I also wrote to the... -
Long story short:
- dad converted Asus Chromebox CN62 into Windows compatible, with mrchromebox BIOS, years and years ago
- gave the computer to his son a couple years later
- son now decided to revert it to Chrome OS, to sell it as original (re-writing BIOS with the backup one created by his dad)
- too lazy to remove the board from the case, thought a voltage regulator was the BIOS chip (you know... it has 8 legs)
(seems like the story was not that short)
He used alligator clips to read the chip. No luck reading it. Removed chip and placed on a SOC-8... -
Thanks for any help. The board version is DAZAARMB6E0 REV: E. The bios chip is winbond 25Q64JVSIQ1736. W25Q64JV is not available in AsProgrammer -- only BV CV FV or FW_1.8c. The chip won't interface with asProgrammer and a CH341A. When I have this chip on the board, the laptop will not post but when I plug it in to power, the blue LED lights up, also the orange when the battery is connected. When I push the power on button, keyboard backlight turns on and the fan starts briefely then turns off. But I can't do anything to program this bios chip so I bought another one.
The BIOS...
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