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Questions tagged [flash]

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1
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1answer
33 views

Flash ROM has lower max voltage than read device?

I'm planning to read a MX25U1635E chip using the CH341a reader. The specs for that chip say it has a max voltage of 1.6-2.0 volts. The reader has an output of 3.3-5.0 volts. Most tutorials for the ...
0
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0answers
33 views

Flash dump binwalk blank, low entropy

I downloaded the flash memory of a device, and I would like to extract the firmware from it. However, after running binwalk nothing comes out: root@fabio:~# binwalk flash.bin DECIMAL ...
1
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0answers
17 views

Motorola Freescale mpc564 microcontroller

Im hoping somebody here can give me some advice. Im trying to read the flash contents of a Mpc564 Motorola MCU. The flash size is 512KB The processor was removed from a bad circuit board. Is there ...
0
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0answers
27 views

Dump Microchip pic12f629

In order to dump or flash a soldered pic12f629, do I have to inevitably buy a PICkit (MPLAB) or can I directly use flashrom tool with an raspberry/arduino gpio board? Or another alternative? Side ...
1
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0answers
29 views

How can you use modprobe nandsim for two chips?

I have a board that uses two nand chips with data that appears to be interleaved byte-by-byte. I have manually desoldered the chips and dumped them with their respective spare areas to two files. I am ...
2
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0answers
133 views

Obscure router refuses to flash OpenWrt

This is a very obscure Chinese router from a brand called Wavlink. It's the Model: WN529R2/WN529R2P. It's web interface was pretty limited and wouldn't allow firmware modifications. I found GND/Tx/Rx/...
0
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0answers
67 views

Read SPI Flash memory blocks

I have device with embedded eCos RTOS and SPI Flash memory. Flash Device Information: CFI Compliant: no Command Set: Generic SPI Flash Device/Bus Width: x16 Little Word Endian: ...
2
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1answer
186 views

SPI Flash, how to find the System memory addresses?

How to determine the System memory addresses of SPI Flash used in device running eCos operating system? For example, show flash command returns the following info: Flash Device Information: ...
0
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0answers
90 views

Dump flash memory data from old arcade board

I have a PCB used in a pinball machine. The PCB has a flash memory chip on it, which contains game code. When the PCB is plugged into a standard ISA slot of the game's Cyrix motherboard, data from the ...
1
vote
1answer
112 views

found easter egg (incl releasing trigger) in as code, but no clue how to fire it

I've been recently looking through decompiled AS3 code from Ubisoft's "The Settlers Online" and found an easter egg along with something that looked like trigger, but - as I have never read AS3 before,...
0
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1answer
50 views

Writing data flash of MPC5606B through JTAG interface using Nexus

I'm programming flash memory of MPC5606B through JTAG interface using Nexus. I'm imitating a tool that perform this task. However, in the middle of the process, the entire flash memory is erased. I ...
0
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1answer
200 views

Flash reading by JTAG in MPC5606B

I'm using MPC5606B and I would like to know what kind of issues I would have, concerning protection\encryption if I tried to read its flash content by JTAG using an external device. I was able to ...
0
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0answers
217 views

Help identifying unknown boot console UART ARM CPU before U-Boot bootloader and/or read flash image?

I have an embedded Linux device with flash storage, using a U-Boot boot loader, that I am accessing via serial UART. The ARM Linux kernel that loads identifies the device as having an ARM926EJ-S ...
4
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0answers
140 views

How to perform manual flashing of a bricked device?

I bought a broken Zoom H4n audio recorder, expecting an easy repair. What I got is a little bit over my head. It isn't booting (beyond a certain point) and I can't enter the firmware update tool. I ...
8
votes
1answer
280 views

How can I determine if NAND blocks are good blocks?

I'm trying to rescue some data from our hardware. On the board I have a pair of Samsung k9f4g08u0d NAND chips. Each chip has been dumped to include every block, including the spare areas. If I invert ...
2
votes
1answer
555 views

SWF flash analysis

An SWF file was recently detected by Windows Defender as SWF/Meadgive. I uploaded a sample to VT and only Microsoft flagged it as malicious. As of today's signatures I am not seeing any further ...
7
votes
3answers
3k views

Extracting a NAND flash dump with OOB data

I'm trying to extract a NAND flash dump of an old Walkman player. The dump was done by a friend and unfortunately cannot be redone because the chip was destroyed. The dump was supposed to be just user ...
0
votes
2answers
2k views

How to extract content of NVRAM file?

How to extract content from NVRAM file? NVRAM type is SPI Serial NOR Flash. NVRAM has been copied as mtdblock partition. An embedded device that run Linux v2.6.18_pro500. Linux version 2.6.18_pro500 ...
0
votes
1answer
394 views

Wiring Flash Chip to Raspberry Pi

I'm trying to wire a Winbond W25Q128FV to my Rasberry Pi Model 1B so that I can dump the firmware. I'll be using an SOIC8 clip and probe cables. Here is what I'm thinking: Flash ----- rPi CS ----- ...
0
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1answer
1k views

Dumping Flash Memory Using Bus Pirate

I'm planning on dumping and reading the flash memory of a Winbond W25Q128FV chip. I've done some research and plan on buying the following tools to achieve this: Bus Pirate 3.6a Probe Cable SOIC8 ...
1
vote
4answers
3k views

Determine NAND Flash chip type and dump contents

I have a USB stick with a NAND Flash chip that has only a few unhelpful markings on the chip. I desoldered the chip and I have a universal programmer, but I'm having trouble using it with my NAND ...
3
votes
1answer
298 views

Reversing Flash Files that use .loadBytes()

I've always been more knowledgeable about binary reversing -- x86/x64 type stuff -- so lately I decided I wanted to try reversing some flash. Used SoThink to get the .AS from a SWF, but the SWF is ...
0
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0answers
79 views

How to decompile flash swz file? [duplicate]

I'm trying to reverse a fighting game to understand how the physics works. It's written in ActionScript and it's deployed with Adobe AIR. In the game directory, there's a bunch of swf files that ...
1
vote
2answers
480 views

Is it possible copy and save bootloader using CLI telnet commands?

I need get copy of original Bootloader from device running embedded Linux. Is it possible copy and save bootloader using CLI telnet commands? I have full access to CLI interface. Is there way copy ...
3
votes
0answers
596 views

Flash dump with encoded firmware

I downloaded firmware from 4MB spi flash in HDMI extender (more info here). It contains following sections: 0x00000000 – 0x00024e03 – SMEDIA02 …….456789ABCDEF (encoded – some strings suggesting ...
1
vote
0answers
1k views

Dump a MX25L12845E with a bus pirate and flashrom

I just received my buspirate, I now want to dump a flash (MX25L12845E). I tried the following command: flashrom -V -p buspirate_spi:dev=/dev/tty.usbserial-AJ02XILF,spispeed=1M -r MX25L128.bin -c ...
3
votes
1answer
5k views

How does ECC work with nandwrite/nanddump in mtd-utils?

I am working on a device which has a NAND flash chip in TSOP48, a SK Hynix H27U1G8F2BTR (1Gbit/128Mbyte, 2048byte (+ 64byte spare) pages, 128K blocks). I have desoldered the chip and dumped the ...
7
votes
1answer
129 views

No apparent effect after editing some JSON in the memory of a Flash process

I was trying to change the values of a Flash game which loads the SWF and some JSON over a HTTPS site. So changing the values of JSON was not possible using browser cache. I changed the values of ...