Micro SDHC, like some types of flash drives, are drives that belong to the category of monolithic ones. Key Features such flash drives - design and manufacturing technology.
For a better understanding, first, in a nutshell, I’ll tell you about the typical design of a typical flash drive.
Micro SD HC memory card before and after scarification:
Monolithic flash drive before and after scarabing:
Typical design of a "classic flash drive":
- Printed circuit board;
- Voltage regulator;
- Controller;
- Memory chip (1-4 pcs.);
- USB interface.
Monolithic flash drives are technologically and visually very different from a typical flash drive. First of all, the difference concerns the fact that here the memory and the controller are one piece, like the USB connector. In order to recover data from a monolith, it is necessary to do a lot of work, among which the most difficult stage is the study of two control contacts: GND (3.3 V power supply) and DATA (data transfer). Before proceeding to research work Need to find identical card donor memory (fully serviceable). For the donor, work is underway to research and find the right contacts. All stages of data recovery from monolithic drives are divided into several points. You can get acquainted with the service of data recovery from memory cards in more detail.
Stages of work (provided that the donor is already available):
1) Scraping the cover of the drive (this is usually a varnish), to get direct access to the contacts;
2) Research on a "living" donor;
3) Scarifying a client drive to connect the necessary contacts to the PC3000 Flash hardware and software system;
4) Reading Dumps in memory for their further processing;
5) Investigation of the received Dump, conducting preliminary analysis, emulating the operation of the controller and obtaining the initial data image of the drive;
6) Checking the recovered files and issuing them to the customer.
The stages of work are described in a very simplified way and do not reveal the full complexity of the work on recovering files from monolithic flash drives. Due to the rather labor-intensive work that takes a lot of expensive time and equipment. That is why the cost of such work is many times higher than the price for classic flash drives and memory cards.
The standard cost for monolithic drives is from UAH 2,500. and 5 to 15 business days.
Perhaps, over time, the procedure for recovering data from a monolithic memory card / flash drive will be simplified, which will reduce the cost and reduce the lead time for such orders. On the this moment only a few companies in Kyiv provide such services. Due to the fact that data recovery from monolithic flash drives requires a lot of time for a highly qualified specialist, vast experience and expensive equipment, this makes many CVIs refuse to provide such services.
Our lab employs first-class data recovery specialists with flash drives. We recover data from flash drives any malfunctions: from deletion of files and other logical problems to hardware malfunctions (faulty controller, damaged memory chips, problems with translation). We successfully solve any manifestations of malfunctions: when a flash drive asks to be formatted, is not detected in the system, is determined by the volume of 0 bytes, or is simply broken in half. Our laboratory is one of the few data recovery laboratories successfully working with monolithic devices (UFD, SDHC, microSD and others). Our experience, equipment and qualifications allow us to perform data recovery from a flash drive in the most short time and without prepayment.
We work with any models of flash drives
Corsair
Kingston
Prestigio
SanDisk
smart buy
Transcend
Why us?
- We are constantly studying market novelties, so we can work with any flash drives;
- We know the prices of competitors and can always offer more profitable terms;
- No one works faster than us: we start immediately, and if necessary, we work at night.
And also:
We know very well internal organization and flash drive algorithms
Experience of specialists - hundreds of models of flash drives
We fight to the last for every lost file
We guarantee:
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To this type malfunctions include: accidental formatting, reinstallation operating system, deleting files, various damage to file systems. The main difference between logic faults is that HDD Fully serviceable and has no defects on the surface. To restore data, specialized programs and software and hardware systems are used that operate in the "read-only" mode in order to exclude a destructive effect on the data being recovered. As a rule, the data can be recovered completely.
Hardware failures
It is customary to call hardware malfunctions caused by the failure of electronic components(controller, memory chips, auxiliary elements) or translation problems. The manifestations of this type of malfunction are different: the media is not detected by the computer, it is detected with a volume of 0 bytes, or it asks to be formatted; they have one thing in common: they can't be solved programmatically - none of the data recovery programs will find anything. The solution is also the same: solder the memory chips, subtract them with a programmer and recreate a virtual translator.
At hardware failures the cost and timing of data recovery work depend only on the flash drive device: controller type, number and type of memory chips, architecture. After free diagnostics, the flash drive goes to work straightaway, without waiting in line, even on weekends, even late at night. You get the result of data recovery from a flash drive in one hour after completion of work.
What do we see in diagnostics?
One NAND chip TSOP48, controller SSS-6691
Four TSOP-48 NAND chips, JMF601 controller
One BGA-52 chip, SM3257 controller
Monolith flash drive.
All hardware failures are similar in terms of data recovery methods and therefore are combined into one group and are often called "controller failure", although the controller itself may be serviceable. In case of hardware failures, it is possible to recover data from a flash drive only using specialized software and hardware systems that allow you to get a NAND memory dump and apply block translation algorithms implemented by the controller during operation.
Equipment for data recovery from flash drives
Legendary complexes PC-3000flash and Flash Extractor
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Reader PC-3000flash
Perhaps this message, when trying to read your flash drive, led you to our website. We hope you didn't click Yes. This message indicates that Windows cannot read the volume due to errors in file system, but the data remained in place, as did most of the information about their placement. Information can be restored almost without loss in the form in which it was before the failure. But if you answer “Yes” and format the flash drive, then this will significantly complicate the work of recovering information. After recovery, the media itself can be formatted and used further. How to distinguish a logical failure from a flash memory failure can be found below.
The most common mechanical damage to USB flash drives is breaking off the USB connector. Very often, flash drives sticking out of USB connectors accidentally touch and break both the flash drive itself and the connector in the computer. The way to recover a broken flash drive depends on its design. In some cases, you can solder the connector back, while in others you have to solder and read the flash memory chip itself. As a rule, a flash drive after recovery, if it remains operational, loses its mechanical strength and appearance. Further, you can read about the types mechanical damage on flash drives of various types.
It is quite rare because the currents and voltages are much lower than in hard drives. The cause of electrical damage to flash drives is, as a rule, wrong connection additional USB ports motherboard, using external USB hubs with low-quality power supplies. To restore a flash drive with this malfunction, you need to solder and read the memory chips. Because the flash drive controller fails, and it is not sold as a separate spare part, that is, there is simply nothing to replace it with. Further, you can find out why you can’t “just” take a usb controller from another flash drive and fix the faulty one.
The most common malfunction of flash media of any type. It is a consequence of the physical wear of flash memory cells. To restore information in this case, it is necessary to solder and count on special device all memory chips and from the resulting dumps recreate the partition image according to the algorithm used by the flash memory controller. Next, you can find out why it is useless to solder flash memory chips in working flash drive and why in order to restore files, you need to do complex manipulations after reading the microcircuits.