Shenzhen Topkeen Industry Co.,Ltd — fake flash drives manufacturer.

1. Fake Flash Drives
from
Shenzhen Topkeen Industry Co
or
History of an Order
Stas Fomin, stas@custis.ru, stanislav.fomin@gmail.com
May 6, 2009
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2. We order
1000
flash 4GB-drives
from Topkeen Inc
http://www.topkeen.com
http://www.topkeen.com is now dead, but they
have still a lot of pages, just Google ”Shenzhen
Topkeen Industry”.
Snow11 ask not confuse Shenzhen Topkeen
Industry and Shenzhen Topkeen Electronics
http://www.topkeen.net.cn (see comments on
slideshare).
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3. Some days ago we got it. . .
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4. 4 / 65

5. But problem number 1:
All flash drives has been broken
into pieces.
(Badly glued).
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6. 6 / 65

7. And big problem number 2:
All flash drives are FAKE .
They ”pretend” to be 4GB flash
drives, but actually they are not.
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8. 8 / 65

9. 9 / 65

10. Looks like normal
4GB flash,
FAT32 format
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11. 11 / 65

12. Also looks like
normal 4GB flash,
FAT32 format
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13. 13 / 65

14. FAR manager
Looks like normal
4GB flash,
FAT32 format
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15. 15 / 65

16. 16 / 65

17. Trying to play copied file…
WTF?
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18. starting from position
7D790000 (hex) = 2105081856 (dec) ≈ 2007 MB
all bytes are incorrect
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19. Lets run expert tools…
Looks like 4GB flash drive
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20. ?
starting from 2GB-position read speed increased
from 11 MB/s to 32 MB/s
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21. 21 / 65

22. Again half of flash-memory is bad
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23. FLASH MICROCHIP
INSIDE OF TOPKEEN 4GB FLASH
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24. FLASH MICROCHIP
SAMSUNG K9GAG08U0M-PCB0
INSIDE OF TOPKEEN 4GB FLASH
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25. FLASH MICROCHIP
SAMSUNG K9GAG08U0M-PCB0
capacity 16Gbit=2Gbyte
INSIDE OF TOPKEEN 4GB FLASH
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26. This is the answer…
16 G bit = 2 G Bytes ≠ 4 GB
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http://www.samsung.com/global/business/semiconductor/productList.do?fmly_id=672

27. HERE IS
THE
PLACE
FOR
ANOTHER
FLASH MICROCHIP CHIP
SAMSUNG K9GAG08U0M-PCB0
capacity 16Gbit=2Gbyte
INSIDE THE TOPKEEN 4GB FLASH
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28. What now?
How to fix?
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29. 29 / 65

30. First, we need to recalibrate fake flash drives
Ask Google about UdTools software, download
and run it.
For example, see
http://forum.flashboot.ru/Files-file-158.html
(This soft works only for specific flash microcontroller).
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31. This is UdTools v.1.0.4.6
for chips: AMECO 8208, 6208A, 6208E (MW6208, MW8208)
We use it to test
and recalibrate
fake USB flashes
Use Google to find
and download UdTools.
For example
http://forum.flashboot.ru/Files‐file‐158.html
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32. UdTools automatically detects flash drives
Just plug-in USB flash drives (1,2,3… ) and click here
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33. ook at this Tab
Low quality,
high speed
(it takes about a minute)…
Best quality,
low speed
(about 30 minutes)…
Use "Special Scan" only for very bad
flash drives with a lot of bad blocks
this mode reduces capacity of a flash drive
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34. Here you can
set ANY capacity…
4GB, 8GB,… 32GB,…
…and make fake
flash drive.
Please, do not do it!
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36. 36 / 65

37. 37 / 65

38. Yes, recalibrating takes a lot of
time .
Also, 15% of flash drives are
completely dead (see next slides).
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39. 39 / 65

40. 40 / 65

41. 41 / 65

42. Bad soldering. . .
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43. A box of crap — 150 dead flash drives. . .
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44. Next problem: How to
glue/stick/bond ”live” flash
drives?
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45. 45 / 65

46. We try to glue them again
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47. By cyanoacrylate. . .
But it takes so much time. . .
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48. So we use ”batch processing”
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49. put both pieces together. . .
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50. stack it. . .
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51. take some weights. . .
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52. 52 / 65

53. press down the stack of flash drives. . .
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54. take hairdryer. . .
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55. and fan flash drives with hot air. . .
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56. especially edges. . .
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57. regularly. . .
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58. press down the weights with your hands. . .
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59. So flash drives are bonded with melted plastic edges
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62. 62 / 65

63. Yes, flash drive has fair 2GB capacity and bonded now
but still ugly because of melted edges,
and badly glued ”logo plate”’ also falling off . . .
So impossible to present this to customers. . .
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64. So we presented all these recovered flash drives. . .
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65. . . . to students at career fairs
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