Question easy jtag after buy - GSM-Forum

marky1991 · 06-24-2019, 13:14

Hello, I have seen that there is an option to change the CID number, my question is, would you be able to change said CID in SD / micro SD cards?

layder · 06-24-2019, 18:32

Most of new SD card doesn't allow CID change.
Some Old EVO Samsung SD is allow

umar342 · 06-24-2019, 18:44

Quote:

Originally Posted by layder

Most of new SD card doesn't allow CID change.
Some Old EVO Samsung SD is allow

sir what is ssd 5.1 solid state drives

marky1991 · 06-24-2019, 20:33

Quote:

Originally Posted by layder

Most of new SD card doesn't allow CID change.
Some Old EVO Samsung SD is allow

But with the SPI function it would not be possible to change the CID to the new cards? Being the samsung evo was a good idea, then with the easy jtag it is not possible to enter the vendor mode and change it?

layder · 06-24-2019, 20:37

Samsung is removed change CID command from eMMC 5.1 and SD cards

marky1991 · 06-24-2019, 20:48

And from other brands than samsung? For example kinsgton, or Chinese brands?

It occurred to me that it could be done (get the firmware or ROM of the card that has the vulnerability) and flash it on new cards that do not have that vulnerability. Could it be done?

layder · 06-24-2019, 23:09

Quote:

Originally Posted by marky1991

And from other brands than samsung? For example kinsgton, or Chinese brands?

It occurred to me that it could be done (get the firmware or ROM of the card that has the vulnerability) and flash it on new cards that do not have that vulnerability. Could it be done?

change CID - not JEDEC command. We can't have info about undocumented eMMC commands for any brands

marky1991 · 06-25-2019, 14:00

And for smi chips? I read any about chorus software, but i think is necesary special hardware...

06-24-2019, 13:14	#1 (permalink)
marky1991 Junior Member Join Date: Apr 2019 Location: Spain Posts: 8 Member: 2906222 Status: Offline Thanks Meter: 0	Question easy jtag after buy Hello, I have seen that there is an option to change the CID number, my question is, would you be able to change said CID in SD / micro SD cards?

06-24-2019, 20:48	#6 (permalink)
marky1991 Junior Member Join Date: Apr 2019 Location: Spain Posts: 8 Member: 2906222 Status: Offline Thanks Meter: 0	And from other brands than samsung? For example kinsgton, or Chinese brands? It occurred to me that it could be done (get the firmware or ROM of the card that has the vulnerability) and flash it on new cards that do not have that vulnerability. Could it be done? Last edited by marky1991; 06-24-2019 at 20:56.

06-24-2019, 18:32	#2 (permalink)
layder Product Supporter Join Date: Jun 2002 Location: Belarus Age: 47 Posts: 3,191 Member: 13148 Status: Offline Thanks Meter: 2,949	Most of new SD card doesn't allow CID change. Some Old EVO Samsung SD is allow

06-24-2019, 20:37	#5 (permalink)
layder Product Supporter Join Date: Jun 2002 Location: Belarus Age: 47 Posts: 3,191 Member: 13148 Status: Offline Thanks Meter: 2,949	Samsung is removed change CID command from eMMC 5.1 and SD cards

06-25-2019, 14:00	#8 (permalink)
marky1991 Junior Member Join Date: Apr 2019 Location: Spain Posts: 8 Member: 2906222 Status: Offline Thanks Meter: 0	And for smi chips? I read any about chorus software, but i think is necesary special hardware...