Zellero

I followed exactly the procedure above to patch my F77DAB and update the latest maps using the goldenapple key (since the testmode_a.key didn't work with firmware 1.10) but it doesn't work. The device boots in the testmode but the content can't be copied. The output.txt file says the following: /mnt/udisk/script.sh[10]: cat: <stdout>: Read-only file system Unable to chmod /system/lib/libigo_jni.so: Read-only file system What am i doing wrong? Am i using the wrong testmode key?