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Lexar 8GB http://forum.hddguru.com/viewtopic.php?f=10&t=34831 |
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Author: | diff [ January 16th, 2017, 10:43 ] |
Post subject: | Lexar 8GB |
Hello, I'm hoping someone can help me, whilst I'm newly registered to this forum and fairly new to data recover I'm no stranger to IT and SMD rework. I've been passed an 8GB Lexar drive that had sustained damage to the plastic casing. It has subsequently been wiggled about in a USB slot to try and get it to work. Attachment: The controller was only partly soldered to the PCB, so I reflowed it with hot air, checked the few SMD components, soldered on a USB socket and plugged it in. The drive is recognised and installed and given a drive letter but shows No Media under device manager. After doing some searching online, I get the impression it's possibly something to do with the controller and have run ChipGenius and get the following output. Description: [E:]USB Mass Storage Device(USB MEMORY BAR) Device Type: Mass Storage Device Protocal Version: USB 2.00 Current Speed: High Speed Max Current: 100mA USB Device ID: VID = 090C PID = 3000 Device Vendor: Silicon Motion,Inc. Device Name: SM3255AA MEMORY BAR Device Revision: 0100 Product Model: USB MEMORY BAR Product Revision: 1000 Controller Vendor: SMI Controller Part-Number: SM3257ENLT - ISP NONE Flash ID code: 44444444 - 2CE/Single Channel [MLC] -> Total Capacity = 8GB Tools on web: http://dl.mydigit.net/special/up/smi.html I have followed the link at the bottom to some tools that suggest they reprogram the controller. I have downloaded a couple, and whilst i've tried to understand via Google translate how they work, they don't seem to detect this drive. Am I going in the right direction with this software ? should I be doing something else ? or shall I go to my plan B, which was buy an identical drive and swap the flash chips over ? Many thanks. Michael |
Author: | arvika [ January 17th, 2017, 4:00 ] |
Post subject: | Re: Lexar 8GB |
1. If you reprogram controller your data will be lost or sure. 2. Controller do not see the memory chip. 3. Chip-off method will be best for this case 4. If you don't know what you doing better outsource the case. In UK there is pcimage and few other skilled guys. |
Author: | pcimage [ January 17th, 2017, 4:06 ] |
Post subject: | Re: Lexar 8GB |
Agree. The controller is unable to access the memory, either due to bad connection or memory degradation. Chip off is the way forward as Arvika says. |
Author: | jeremyb [ January 17th, 2017, 4:58 ] |
Post subject: | Re: Lexar 8GB |
Flash ID code: 44444444 Bad PCB, bad solder joint on the controller or NAND.. It's reading the ID wrong |
Author: | jeremyb [ January 17th, 2017, 4:59 ] |
Post subject: | Re: Lexar 8GB |
pcimage wrote: Chip off is the way forward as Arvika says. If he legitimately says that he will quickly go insane off chipping so many broken connector jobs |
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