Eeprom dump thread!

[rddube]

Re: Eeprom dump thread!

Hello Lotas,

Thank you so much, will give it a try! Why is there a jpg file attached, is it something that I need to do with?

Again, thanks and will give you feedback quickly!

[rddube]

Re: Eeprom dump thread!

Hello again,

Using my ch341a programmer as usual, I cannot erase the chip, it is giving me an erase verification error!

Not sure why, but does that mean that the chip might be faulty, or is there a trick to get access to it?

The chip is a Winbond W25Q64JV (3.3V).

I've alwayas used this programmer and it has always worked, first time this happens. When I try to erase I get an erase error, and the chip has not changed, same content!

Any ideas?

[lotas]

Re: Eeprom dump thread!

First try to remove the protection (status register), then try to erase it, you won’t be able to replace it with a new spi flash.

[rddube]

Re: Eeprom dump thread!

Ok, so succeeded in programming the chip, and we seem to be getting closer as the TV seems to turn on normally, but no backlights and no image on the screen. I can then turn it off and turn it back on, with a solid red light, but nos backlight, no image and no sound. Tks!

[rddube]

Re: Eeprom dump thread!

Woops, addendum Lotas, tv works perfectly with your fixed firmware. Yes! Had another problem in that backlight leds one of them was intermittent and was giving the false impression that the tv was not powering on. Got that led changed, and now were back to full steam ahead.

Thank you very much Lotas, another save from the dump!

[lotas]

Re: Eeprom dump thread!

Woops, addendum Lotas, tv works perfectly with your fixed firmware. Yes! Had another problem in that backlight leds one of them was intermittent and was giving the false impression that the tv was not powering on. Got that led changed, and now were back to full steam ahead.

Thank you very much Lotas, another save from the dump!

Ok!

[img1]

Re: Eeprom dump thread!

Hi Lotas!

I am searching for a dump of a(n infamous) K9GAG08U0E into my boot looping Samsung UE40D5500RWXXH. The Board ID is BN41-01660B, the NAND's position is IC1302. The original content can't be read correctly as it differs on every readout due to the failing NAND chip. I tried the usual trivias: cleaning the chip's pins with 99.99% isopropyl alcohol and a glass-fibre pen, reading with different readers and different TSOP48 sockets, lowering the read speed, changing the USB cables to shorter and more shielded, changing the USB ports, changing the USB controllers (Intel, Etron, ASMedia). I have some more ideas for heating up its package with hot air and supplying the slightly lifted Vcc from lab PSU but I don't want to spent unneccessary times with experimenting if I can get working solution from you guys.

Thank you!

Alex

[lotas]

Re: Eeprom dump thread!

Hi Lotas!

I am searching for a dump of a(n infamous) K9GAG08U0E into my boot looping Samsung UE40D5500RWXXH. The Board ID is BN41-01660B, the NAND's position is IC1302. The original content can't be read correctly as it differs on every readout due to the failing NAND chip. I tried the usual trivias: cleaning the chip's pins with 99.99% isopropyl alcohol and a glass-fibre pen, reading with different readers and different TSOP48 sockets, lowering the read speed, changing the USB cables to shorter and more shielded, changing the USB ports, changing the USB controllers (Intel, Etron, ASMedia). I have some more ideas for heating up its package with hot air and supplying the slightly lifted Vcc from lab PSU but I don't want to spent unneccessary times with experimenting if I can get working solution from you guys.

Thank you!

Alex

Hello, I have a clean, clean dump without BB and ECC, but I need to know which physical BBs are present on your NAND Flash in order to prepare a dump for your NAND (so that the data does not end up on the BB).
P.S. And the data will always be different when reading NAND due to ECC errors.

[webadv]

Re: Eeprom dump thread!

hi, i am looking for the firmware for a samsung UE55KU6079U, BN41-02528A, BN94-10832C, panel CY-GK050HGNV5H.
the tv works but has no colors.

I wrote the memories with the bins from the ue50ku6092u, but it doesn't display anything. how could i solve it?

[lotas]

Re: Eeprom dump thread!

samsung UE55KU6079U, BN41-02528A, BN94-10832C, panel CY-GK050HGNV5H.

How can there be a TV with a “55” diagonal, and the panel costs from “50”, correct it.

[webadv]

Re: Eeprom dump thread!

How can there be a TV with a “55” diagonal, and the panel costs from “50”, correct it.

the board is on the diagonal of 55. but in the information about it it appears that it is ue50ku6092u. I wrote the bins for this model but it doesn't display anything anymore

[webadv]

Re: Eeprom dump thread!

How can there be a TV with a “55” diagonal, and the panel costs from “50”, correct it.

the board is on the diagonal of 55. but in the information about it it appears that it is ue50ku6092u. I wrote the bins for this model but it doesn't display anything anymore
that's how I bought the TV. without the original motherboard

[lotas]

Re: Eeprom dump thread!

the board is on the diagonal of 55. but in the information about it it appears that it is ue50ku6092u. I wrote the bins for this model but it doesn't display anything anymore
that's how I bought the TV. without the original motherboard

Return all the original dumps (if you saved them), here you just had to replace the dump (t-con) 25Q80.
Or change it to your panel in service mode.

[webadv]

Re: Eeprom dump thread!

Return all the original dumps (if you saved them), here you just had to replace the dump (t-con) 25Q80.
Or change it to your panel in service mode.

from the service menu you have nothing to do with them
here are the files it works with

[lotas]

Re: Eeprom dump thread!

These are his original dumps, if so, then return dumps 24c512 and 25Q40, and write down mine 25Q80.
In service mode you can change the panel type!

[webadv]

Re: Eeprom dump thread!

These are his original dumps, if so, then return dumps 24c512 and 25Q40, and write down mine 25Q80.
In service mode you can change the panel type!

I tried, but black screen

[img1]

Re: Eeprom dump thread!

Hello, I have a clean, clean dump without BB and ECC, but I need to know which physical BBs are present on your NAND Flash in order to prepare a dump for your NAND (so that the data does not end up on the BB).
P.S. And the data will always be different when reading NAND due to ECC errors.

Thank you Lotas, I'll upload the dump later. Is the full dump is what you need or the main is enough (without the spare part)?

Is it normal in those Samsung NANDs if there are 60-90 thousands (!) of bit errors? I know it is less than 1% but it seems like fairly unstable.

[lotas]

Re: Eeprom dump thread!

Thank you Lotas, I'll upload the dump later. Is the full dump is what you need or the main is enough (without the spare part)?

Is it normal in those Samsung NANDs if there are 60-90 thousands (!) of bit errors? I know it is less than 1% but it seems like fairly unstable.

You will erase nand and show log programmers where the physical ones are and how many bad blocks (BB) are at which addresses. I don't need your dump.

[img1]

Re: Eeprom dump thread!

You will erase nand and show log programmers where the physical ones are and how many bad blocks (BB) are at which addresses. I don't need your dump.

Sadly it looks like the FlashCat Mach 1 programmer doesn't provide detailed information about the bad blocks:

Connected to FlashcatUSB Mach, firmware version: 2.29
Voltage set to: 3.3V
Detecting connected Flash device...
Initializing Parallel NAND device mode
I/O mode successfully initialized
Attempting to automatically detect Flash device
NAND clock speed set to: 20MHz
Mode NAND X8 ASYNC returned ident code: 0xECD5847250
Successfully detected device in NAND mode
Connected to Flash (CHIP ID: 0xECD5847250)
NAND device failed to load ONFI table
Flash detected: Samsung K9GAG08U0E (2,176,843,776 bytes)
Programming mode: Parallel I/O
Page Information: 128 total pages; 8,192 bytes per page; 436 bytes extended size
Block Information: 2,076 total blocks; 1,104,384 bytes per block
Device interface: NAND (X8 3.3V)
Loading NAND memory map for valid memory
Total bad blocks: 1467
NAND memory map complete: 77,952 pages available for access
Flash device successfully detected and ready for operation
Sent memory erase command to device: Samsung K9GAG08U0E
Successfully erased NAND Flash device

What should I do? I didn't find any log files in the program files / FlashCat folder.

[lotas]

Re: Eeprom dump thread!

There can't be that many BBs "Total bad blocks: 1,467."
Erase completely and check again.