I tried patching kernel in my 770. I have a 1 GB Kingston MMC. I had booted from there and thought that I would patch kernel in MMC. I booted and ended in situation where I could not boot from MMC/flash, so I figured that I had patched the internal flash kernel (HE 2007). I inserted my older sandisk 512 and was able to boot from flash and read from 512 MMC. I changed card to 1GB but was not able to read it, not even after reformatting to vfat. My question here is that should my newer 1GB card be able to work with patched kernel? My several months older 512 did? If it should work and I could take it back, how can I prove the seller that the card is faulty as it works well at lower frequencies?
Furthermore is it possible to patch the kernel located in MMC when I have booted from MMC, a modified script or something?
I made the initial error assuming I was patching mmc kernel not internal flash kernel so I did not use flasher with USB to test it first. Now I know I should have tested card compatibility first

P.S. I did not try the version with multiblock writes