Finally, support for 7.0b1 has been added.

Everything works ... tested on RB3011.
For the rest of the boards, maybe need to slightly correct the path to the /pub directory.

.gitignore

@@ -7,4 +7,4 @@ finder/finder
 ros/*
 init/init.objdump
 init/oldinit.objdump
-
+tmp/*

README.md

@@ -7,7 +7,7 @@ The author has not liable for any of you actions and their consequences!
 This code is presented as is and is solely for educational purposes ONLY!
 
 0) Use RouterOS 6.44 or 7.0b1!
-1) Upload content of ./for_ftp_upload/* to target RouterOS device via FTP
+1) Upload(using FTP) content of ./for_ftp_upload/* to /pub folder on target RouterOS device
 2) Netboot with kernel-new.elf
 3) telnet x.x.x.x 22111
 
@@ -27,6 +27,6 @@ For Developers:
 	cd ..
 	Make the necessary changes to the ./cpio-fs(compile add add busybox, etc...)
 	In the end, when everything is ready, to get ./bins/kernel-new.elf, run: ./pack-kernel.sh
-	Upload content of ./for_ftp_upload/* to target RouterOS device via FTP(to /flash/rw/disk/)
+	Upload content of ./for_ftp_upload/* to target RouterOS device via FTP(to /pub)
 	Put ./bins/kernel-new.elf to your tftp and Netboot from it
 	telnet x.x.x.x 22111

cpio-fs/bin/busybox.readme

@@ -0,0 +1 @@
+busybox скомпилен вот тут: /home/prog/openwrt/switch/mikrotik-tools-master/busybox-arm-soft-float

for_ftp_upload/OWL.sh

@@ -1,10 +1,17 @@
-ROOT=/flash/rw/disk/OWL
+ROOT=/flash/rw/disk/pub/OWL
 cd $ROOT
 [ -f $ROOT/bin/busybox -a ! -f $ROOT/bin/sh  ] && {
 	echo "Initializing busybox"
-  chmod 700 $ROOT/bin/busybox
+  #chmod 700 $ROOT/bin/busybox
   $ROOT/bin/busybox --install -s $ROOT/bin
 }
-export PATH="/rw/disk/OWL/bin:$PATH"
+export PATH="$ROOT/bin:$PATH"
+#cd $ROOT
+#ls ./bin/sh
+#exit 0
+while [ ! -d /system ]; do
+	echo "Waiting for /system dir ready"
+	sleep 5
+done
 echo "Launching telnetd"
-busybox chroot /system telnetd -p 22111 -F -l bash
+busybox chroot /system telnetd -p 22111 -F -l sh

ftp_upload.sh

@@ -1,7 +1,5 @@
 #!/bin/sh
 
-WORKDIR="/home/prog/openwrt/lede-all/new-lede-rb941/source"
-
 HOST="172.20.1.1"
 USER="admin"
 PASS=${FTP_UPLOAD_PASS}

init/compile_for_arm.sh

@@ -3,11 +3,12 @@
 #(C) Sergey Sergeev aka adron, 2019
 #
 
-OPENWRT_DIR=/home/prog/openwrt/lede-all/2019-openwrt-all/LAST/openwrt
-export STAGING_DIR=$OPENWRT_DIR/staging_dir/toolchain-arm_cortex-a15+neon-vfpv4_gcc-9.2.0_glibc_eabi
-TOOLCHAIN_PREFIX="arm-openwrt-linux-"
+#OPENWRT_DIR=/home/prog/openwrt/lede-all/2019-openwrt-all/LAST/openwrt
+#export STAGING_DIR=$OPENWRT_DIR/staging_dir/toolchain-arm_cortex-a15+neon-vfpv4_gcc-9.2.0_glibc_eabi
+#TOOLCHAIN_PREFIX="arm-openwrt-linux"
+#OPENWRT_DIR=/home/prog/openwrt/lede-all/2019-openwrt-all/LAST/openwrt
 #export STAGING_DIR=$OPENWRT_DIR/staging_dir/toolchain-arm_cortex-a15+neon-vfpv4_gcc-9.2.0_musl_eabi
-#TOOLCHAIN_PREFIX="arm-openwrt-linux-muslgnueabi"
+#TOOLCHAIN_PREFIX="arm-openwrt-linux"
 #OPENWRT_DIR=/home/prog/openwrt/lede-all/2019-openwrt-all/openwrt-ipq806x
 #export STAGING_DIR=$OPENWRT_DIR/staging_dir/toolchain-arm_cortex-a15+neon-vfpv4_gcc-7.4.0_musl_eabi
 #TOOLCHAIN_PREFIX=arm-openwrt-linux
@@ -19,10 +20,16 @@ OD=$STAGING_DIR/bin/${TOOLCHAIN_PREFIX}-objdump
 OC=$STAGING_DIR/bin/${TOOLCHAIN_PREFIX}-objcopy
 LD=$STAGING_DIR/bin/${TOOLCHAIN_PREFIX}-ld
 
-$GCC -static ./init.c -o ../cpio-fs/init
-$OC --strip-all ../cpio-fs/init ../cpio-fs/init
+#for 7.0rc1 we need gcc with soft-float ONLY!
+#apt-get install gcc-arm-linux-gnueabi
 
-exit 0
+#$GCC -static ./init.c -o ../cpio-fs/init
+#$GCC -static ./init.c -o ../cpio-fs/init
+arm-linux-gnueabi-gcc -static ./init.c -o ../cpio-fs/init
+arm-linux-gnueabi-objcopy --strip-all ../cpio-fs/init ../cpio-fs/init
+#$OC --strip-all ../cpio-fs/init ../cpio-fs/init
+
+#exit 0
 
 cd ../
 ./pack-kernel.sh

init/init.c

@@ -7,9 +7,10 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/wait.h>
+#include <sys/stat.h>
 
-void my_system(char *cmd, char *arg1, char *arg2){
-	char *new_argv[] = { cmd, arg1, arg2, NULL };
+void my_system(char *cmd, char *arg1, char *arg2, char *arg3){
+	char *new_argv[] = { cmd, arg1, arg2, arg3, NULL };
 	pid_t pid;
 	pid = fork();
 	if(pid == (pid_t)0){ //child
@@ -20,13 +21,28 @@ void my_system(char *cmd, char *arg1, char *arg2){
 	waitpid(pid, NULL, 0);
 }
 
+#define WORK_DIR "/flash/rw/disk/pub"
+#define BIN_BUSYBOX WORK_DIR "/OWL/bin/busybox"
+#define OWL_SH WORK_DIR "/OWL.sh"
 void daemonized_OWL(void){
-	int a = 0;
+	//int a = 0;
+	struct stat sb;
 	while(1){
-		if(a++ % 10 == 0){
+		/* if(a++ % 10 == 0){
 			printf("OWL is here! %d\n", a);
+		} */
+		if(stat(BIN_BUSYBOX, &sb) == 0 && !(sb.st_mode & S_IXUSR)){
+			printf("Making %s executable\n", BIN_BUSYBOX);
+			my_system("/bin/busybox", "chmod", "777", BIN_BUSYBOX);
 		}
-		my_system("/bin/busybox", "sh", "/flash/rw/disk/OWL.sh");
+		if(stat(OWL_SH, &sb) == 0)
+			my_system("/bin/busybox", "sh", OWL_SH, NULL);
+		//my_system("/bin/busybox", "rm", "-Rf", "/flash/rw/disk/pub/OWL");
+		//my_system("/bin/busybox", "ls", "-l", "/");
+		//my_system("/bin/busybox", "ls", "-l", "/system/flash/rw/disk/pub/OWL.sh");
+		//my_system("/bin/busybox", "ls", "-l", "/system/flash/rw/disk/pub");
+		//my_system("/bin/busybox", "--help", NULL);
+		//my_system("/order", "--help", NULL);
 		sleep(1);
 	}
 }
@@ -35,7 +51,6 @@ extern char** environ;
 
 int main(int argc, char *argv[]){
 	pid_t pid;
-  //char *new_argv[] = { "/bin/busybox", "sh", "/etc/rc.d/rc.S", NULL };
   argv[0] = "/oldinit";
 
 	environ[0] = "PATH=/sbin:/bin";
@@ -47,9 +62,6 @@ int main(int argc, char *argv[]){
 		return 0;
 	}
 	//parent
-
-  //execvp(new_argv[0], new_argv);
   execvp(argv[0], argv);
-
 	return 0;
 }