First off, I suspect some people who are struggling have fake cards there are a lot out there and some of them look pretty convincing.This can result in you being stuck with a smaller card than youd like in a device or not being able to use a backup in case of damage.
Sd Card Clone How To Change TheIve spent a while trying to work out how to change the ID on some cards.There is surprisingly little info out there about this, when its easy for other devices.There are rumours of cheap Chinese SD cards that dont follow the official spec and allow you to change to them I now have large pile of cheap Chinese SD cards on my desk, but unfortunately none of them did allow it. The spec includes a command (CMD26) for writing the CID, but its only supposed to work once in the factory when the card is first assigned an ID. However, there is probably some way to unlock them If youve found this page by looking for help on this topic youve probably already seen Bunnie Huangs SD card hacking presentation, unfortunately I wasnt able to track down any APPO AX211 based cards, which I thought would be my best bet. In that presentation was mention of vendor commands for a Samsung eMMC used as the built-in storage on an Android phone. Im not well enough versed on the technology to know quite what the difference between eMMC and SD cards are, aside from the way SD cards are packaged of course although that might be all there is to it. Reading around they seem work in the same way and appear the same within Linux. Then I stumbled upon SamDunk, Change the CID in Samsung eMMC Tlcharger-Download.txt. So I started buying Samsung SD cards, hoping for one with the same moviNAND core as the eMMC in their phones. I now also have a stack of Samsung SD cards on my desk, but with the last different one I found I struck gold (Collecting Samsung cards is more expensive than cheap Chinese ones and it takes some effort to avoid getting fakes.) The Samsung EVO Plus 32GB MicroSDHC card took the commands from SamDunk and let me change the CID. I have taken the SamDunk code and reworked it a little to make it easier to use for SD cards, but all the credit really needs to go to the original author. To use you simply need a rooted Android device with an SD card slot. Copy the evopluscid binary to the device and put it somewhere with a proper Linux file system (not FAT), then apply execute permission to it. Run the tool and point it to the SD card device e.g. List the devblock folder and make sure the device you going to use appears and disappears as you insert and remove the SD card to be sure. Sd Card Clone Serial Number AndIf you only need to change the card serial number (part of the CID) you can supply the old CID and the new serial number and the new CID will be calculated for you. I suggest you make a note of the old CID first, in case you want to set it back later. This can be found in the file like sysclassmmchostmmc1mmc1:0001cid, but the path may vary, and again make sure you are looking at the right card by checking it disappears when you remove the card. Use only against genuine Samsung Evo Plus cards, anything else is unlikely to work and could be damaged. Even the right card could potentially be damaged To set a new completely new CID: Usage:.evopluscid lt;devicegt; lt;new cidgt;.evopluscid devblockmmcblk1 744a454e2f412020106c6d77470104c3. Sd Card Clone Update With SomeI thought it was worth posting an update with some extra information.
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