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sonix · 02-05-2019, 02:29 PM

Good afternoon.

First of all I would like to thank to m4mmon, nhedgehog and rkomar for their huge contribution in this case. I have also "experience" with read-only internal flash micro sd card, but with help from this thread I have successfully replaced internal sd card.

I used 8 GiB sd card as replacement and I did not modified "First sector value". Because I have usb card reader I looked for another solution how to get CID from original internal sd card. I used for read out arduino uno and micro sd card adapter with soldered wires. After I knew CID I searched it in card image and surprisingly I found it on file system in file "fwinfo.txt" located on root of /dev/sdc9 ("secure" partition with size 98MiB) and also on /dev/sdc1 ("user" partition with size 3,2GiB). This file contains line "sdsn: 0x12300423" where the number starting with 0x was the CID in my case.

02-05-2019, 02:29 PM	#55
sonix Junior Member Posts: 4 Karma: 45778 Join Date: Jan 2019 Device: PocketBook 626	Good afternoon. First of all I would like to thank to m4mmon, nhedgehog and rkomar for their huge contribution in this case. I have also "experience" with read-only internal flash micro sd card, but with help from this thread I have successfully replaced internal sd card. I used 8 GiB sd card as replacement and I did not modified "First sector value". Because I have usb card reader I looked for another solution how to get CID from original internal sd card. I used for read out arduino uno and micro sd card adapter with soldered wires. After I knew CID I searched it in card image and surprisingly I found it on file system in file "fwinfo.txt" located on root of /dev/sdc9 ("secure" partition with size 98MiB) and also on /dev/sdc1 ("user" partition with size 3,2GiB). This file contains line "sdsn: 0x12300423" where the number starting with 0x was the CID in my case.