Eeprom dump thread!

[lotas]

Re: Eeprom dump thread!

Here is an approximate programmer log for bad blocks, indicating at which addresses they are located:

Request for bad blocks...Normal
Number of bad blocks: 6
Block 0x000D (13) address 0x00D00000 (0x00DB1200) Bad block
Block 0x057B (1403) address 0x57B00000 (0x5C5ABE00) Bad block
Block 0x058E (1422) address 0x58E00000 (0x5D9AEC00) Bad block
Block 0x0645 (1605) address 0x64500000 (0x69A6C200) Bad block
Block 0x06BE (1726) address 0x6BE00000 (0x719DCC00) Bad block
Block 0x0819 (2073) address 0x81900000 (0x88754A00) Bad block

[img1]

Re: Eeprom dump thread!

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

Erased 3 times in a row. This is my full log what FlashCat software produces:


Welcome to the FlashcatUSB interfacing software, build: 645
Copyright 2023 - Embedded Computers LLC
Running on: Windows (64 bit)
FlashcatUSB Script Engine build: 312
Serial NOR memory database loaded: 502 devices supported
Serial NAND database loaded: 67 devices supported
Parallel NOR memory database loaded: 405 devices supported
Parallel NAND memory database loaded: 273 devices supported
Connected to FlashcatUSB Mach?, firmware version: 2.29
OTP/UV EPROM memory database loaded: 46 devices supported
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: 1455
NAND memory map complete: 79,488 pages available for access
Flash device successfully detected and ready for operation


About the full chip erase it doesn't provide detailed information, only 2 lines:

Sent memory erase command to device: Samsung K9GAG08U0E
Successfully erased NAND Flash device

I'll try to find where it logs the BBs list. Or is it not worth that because is it a highly damaged NAND beyond 'point of no return' ?

[img1]

Re: Eeprom dump thread!

I'll try to find where it logs the BBs list. Or is it not worth that because is it a highly damaged NAND beyond 'point of no return' ?

No official BB list produced, so I managed to wrote down the BBs from the programs graphical interface. It is not less than 1455 (picture):

2-13, 137, 215-377, 471-497, 499-510, 512, 514-518, 520-522, 524-532, 534-535, 537-561, 563-568, 570-584, 586-619, 621-626, 628-632,
634-640, 642-699, 701-753, 755-768, 770-790, 792, 794-835, 837-847, 849, 851-896, 898-916, 918-959, 961-1024, 1026-1051, 1053-1106,
1108-1140, 1142-1152, 1154-1195, 1197-1206, 1208, 1210, 1212-1221, 1223-1271, 1273-1280, 1282-1291, 1293-1408, 1410-1428,
1430-1487, 1489-1515, 1517-1521, 1523-1530, 1532, 1534-1536, 1538-1650, 1652-1664, 1666-1787, 1943, 2033-2040, 2043, 2074.

[lotas]

Re: Eeprom dump thread!

But there cannot be so many physical Bad Blocks, it can be the remains of a dump and in it these BBs or the programmer considers them as ECC.
Try to thoroughly clean all the legs of the Nand Flash from flux, rinse it in isopropyl alcohol and acetone, here you need good contact between the legs and the adapter itself.

[img1]

Re: Eeprom dump thread!

But there cannot be so many physical Bad Blocks, it can be the remains of a dump and in it these BBs or the programmer considers them as ECC.
Try to thoroughly clean all the legs of the Nand Flash from flux, rinse it in isopropyl alcohol and acetone, here you need good contact between the legs and the adapter itself.

I did it initially before I did anything (fiber glass pen + isopropyl alcohol), but I'll give it a second chance. Now I did it again.

Something I don't understand: when the software recognising the NAND the message is "loading NAND memory map for valid memory, total bad blocks: 1455". And when I fiddled with the "Analyze" button in the "NAND memory map" menu, a window popped up with "Warning, this operation will erase and overwrite all blocks, continue?". Yes, of course and the process finished less than a second and then the displayed green-black blocks changed to yellow with a question mark in them, and the title says "NAND blocks analyzed (0 bad blocks found). But if I redetect (reinitialize) the NAND, the number of the BBs remains 1455.

[lotas]

Re: Eeprom dump thread!

Yes, it’s strange here either the nand flash is completely dead (try to find exactly the same used or new one) or the programmer does not understand the algorithm of this nand, I have never had more than 10 physical BBs in this NAND.

[img1]

Re: Eeprom dump thread!

Yes, it's strange here either the nand flash is completely dead (try to find exactly the same used or new one) or the programmer does not understand the algorithm of this nand, I have never had more than 10 physical BBs in this NAND.

I think the software is buggy. After I turned off the bad block management and erased the NAND and activated back the BB management, the number of the bad blocks decreased to 7. I really hope this is their valid number.

137, 657, 1943, 2033, 2039, 2040, 2074.

[lotas]

Re: Eeprom dump thread!

Yes, now it looks more like the truth, but for some reason the BB at address 2073 is not shown, it is present on everyone, even in these new nands.

[img1]

Re: Eeprom dump thread!

Yes, now it looks more like the truth, but for some reason the BB at address 2073 is not shown, it is present on everyone, even in these new nands.

Interesting. What if we take it as bad, that won't be a problem if we don't write on that block, isn't it?

Edit: As I found I can manually discard blocks as bad blocks, so I discarded the 2073.

Edit 2: It is just temporary so not written onto the BB table. After I redetected the NAND the manually disabled block disappeared. Or maybe I did something wrong.

[lotas]

Re: Eeprom dump thread!

This is what happened under your BB.

[lotas]

Re: Eeprom dump thread!

In private messages there is a link to your dump, write it down as is (without missing BB!).

[luzmina]

Re: Eeprom dump thread!

Hi Lotas, I have this Roku 43" TV that the standby light is on but do not respond to power ON, I replace the CPU with a good one from a similar good board of a 32", problem was the same then I put the NAND from the 32" and the 43" turn ON, backlight turn ON, respond to remote control but no picture, then I read the original NAND and programmed on the new NAND, now the TV have stand by light and does not turn ON, I suspect those Roku TVs are reading the CPU serial number so they do not work with a new CPU, here are the 2 files:
https://drive.google.com/file/d/1yvU...usp=drive_link
https://drive.google.com/file/d/1T8m...usp=drive_link

[Rajnhl]

Re: Eeprom dump thread!

Hi Lotas, I have this Roku 43" TV that the standby light is on but do not respond to power ON, I replace the CPU with a good one from a similar good board of a 32", problem was the same then I put the NAND from the 32" and the 43" turn ON, backlight turn ON, respond to remote control but no picture, then I read the original NAND and programmed on the new NAND, now the TV have stand by light and does not turn ON, I suspect those Roku TVs are reading the CPU serial number so they do not work with a new CPU, here are the 2 files:
https://drive.google.com/file/d/1yvU...usp=drive_link
https://drive.google.com/file/d/1T8m...usp=drive_link

start first with small and easy step.
Software/firmware is 1st step then hardware.

[mrdoob]

Re: Eeprom dump thread!

Hi. I am looking for the firmware for an RCA RLDED4031A-RK (Canada). Main board TP.MS3393.P85.

EEPROM: 25Q16BSIG
Right now the TV just has the red LED and does nothing else.

[lotas]

Re: Eeprom dump thread!

Hi. I am looking for the firmware for an RCA RLDED4031A-RK (Canada). Main board TP.MS3393.P85.

EEPROM: 25Q16BSIG
Right now the TV just has the red LED and does nothing else.

Post your non-working dump here, I'll take a look and maybe I'll fix it.

[mrdoob]

Re: Eeprom dump thread!

Post your non-working dump here, I'll take a look and maybe I'll fix it.

The TV doesn't even come on, only the red LED is On. I have no way to get the dump. At least not that I know of.

[lotas]

Re: Eeprom dump thread!

The TV doesn't even come on, only the red LED is On. I have no way to get the dump. At least not that I know of.

How are you going to program someone else’s dump of your flash, do you have a programmer? If there is, read the contents of your flash and post it here.
If it does not go into operating mode, then most likely your firmware is damaged, you read the contents (dump) of your 25Q16BSIG and show it to me, I will restore it and it will be operational and then you will download my corrected dump and your TV will work again, when provided that the problem is in the firmware.

[mrdoob]

Re: Eeprom dump thread!

How are you going to program someone else's dump of your flash, do you have a programmer? If there is, read the contents of your flash and post it here.
If it does not go into operating mode, then most likely your firmware is damaged, you read the contents (dump) of your 25Q16BSIG and show it to me, I will restore it and it will be operational and then you will download my corrected dump and your TV will work again, when provided that the problem is in the firmware.

Thanks Lotas. I have been doing ecectronics repairs for a long time, but this is the first time that I need to do a firmware load. I will look into getting a porgrammer. I was hoping that with a USB drive I could just load new firmware. Like I said, this is my first time.

[lotas]

Re: Eeprom dump thread!

Thanks Lotas. I have been doing ecectronics repairs for a long time, but this is the first time that I need to do a firmware load. I will look into getting a porgrammer. I was hoping that with a USB drive I could just load new firmware. Like I said, this is my first time.

On this chassis you will not be able to download the firmware via USB, you will not even have access to USB, just update it if the TV is fully working, and only through the programmer.

[amine23]

Re: Eeprom dump thread!

hi every one i need dump of Thoshiba Toshiba 40bv700f part number 17mb61-2