diff --git a/Makefile b/Makefile
index ed470846..3bee544c 100644
--- a/Makefile
+++ b/Makefile
@@ -36,9 +36,14 @@ endef
 all: kernel-axe-modules kernel
 
 .PHONY: release
-release: kernel-axe-modules out/idl4k.scr
+release: kernel-axe-modules out/idl4k.scr out/idl4k.recovery
 	-ls -la out
 
+.PHONY: dist
+dist:
+	-mkdir -p dist
+	cp out/*.fw out/*.usb out/*.flash dist
+
 #
 # create CPIO
 #
@@ -65,14 +70,25 @@ fs-list:
 # uboot
 #
 
-out/idl4k.scr: patches/uboot.script out/satip-axe-$(VERSION).fw
-	rm -f out/*.scr
+out/idl4k.recovery: patches/uboot-recovery.script
+	$(TOOLPATH)/mkimage -T script -C none \
+	  -n 'Restore original idl4k fw' \
+	  -d patches/uboot-recovery.script out/idl4k.recovery
+
+out/idl4k.scr: patches/uboot.script patches/uboot-flash.script out/satip-axe-$(VERSION).fw
+	rm -f out/*.scr out/*.usb out/*.flash out/*.recovery
 	sed -e 's/@VERSION@/$(VERSION)/g' \
 	  < patches/uboot.script > out/uboot.script
+	sed -e 's/@VERSION@/$(VERSION)/g' \
+	  < patches/uboot-flash.script > out/uboot-flash.script
 	$(TOOLPATH)/mkimage -T script -C none \
 	  -n 'SAT>IP AXE fw v$(VERSION)' \
-	  -d out/uboot.script out/idl4k.scr
-	-rm out/uboot.script
+	  -d out/uboot.script out/satip-axe-$(VERSION).usb
+	$(TOOLPATH)/mkimage -T script -C none \
+	  -n 'SAT>IP AXE fw v$(VERSION)' \
+	  -d out/uboot-flash.script out/satip-axe-$(VERSION).flash
+	ln -sf satip-axe-$(VERSION).usb out/idl4k.scr
+	rm out/uboot.script out/uboot-flash.script
 
 out/satip-axe-$(VERSION).fw: kernel/arch/sh/boot/uImage.gz
 	mkdir -p out
diff --git a/README.md b/README.md
index 6e5a0c57..f11ca312 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ A firmware with minisatip for Inverto IDL-400s/Grundig GSS.BOX/Telestar Digibit
 
 Releases:
 
-  - see to dist directory
+  - see to dist directory - README file
 
 Requirements:
 
diff --git a/dist/README b/dist/README
new file mode 100644
index 00000000..cd8274e9
--- /dev/null
+++ b/dist/README
@@ -0,0 +1,73 @@
+This directory contains USB firmware for
+  * Inverto IDL-400s
+  * Grundig GSS.BOX
+  * Inverto IDL-400S
+
+Installation:
+
+  - setup a DHCP server for the box ethernet MAC address
+  - copy satip-axe-$(VERSION).usb as idl4k.scr (rename the file) to the USB stick
+  - copy satip-axe-$(VERSION).fw (no rename) to the USB stick
+  - both files should be in the root directory on the USB stick
+  - plug the USB stick to the upper USB port in box
+  - turn on the box
+  - the tuner LEDs must blink (Knight Rider effect) for few seconds
+  - box is accessible through telnet or ssh, IP address is obtained using DHCP
+  - the default login/password is root/satip
+  - the firmware is not written to the internal flash - when the USB stick
+    is not in the box, the original firmware will be booted
+
+Installation to flash:
+
+  - WARNING! The original firmware will be overwritten!
+  - same steps, just replace satip-axe-$(VERSION).usb to satip-axe-$(VERSION).flash
+  - after boot of the new version, remove the USB stick to not write
+    the .fw file multiple times to flash (on each box start)
+
+Customization:
+
+  - configuration file is in /etc/sysconfig/config
+  - localboot script can be in /etc/sysconfig/localboot
+  - passwd file is copied from /etc/sysconfig/passwd
+  - ssh authorized_keys file is copied from /etc/sysconfig/authorized_keys
+
+Recovery of the original firmware:
+
+  - copy idl4k.recovery file as idl4k.scr file to the root directory on the USB stick
+  - plug the USB stick to the upper USB port in box
+  - turn on the box
+  - box is accessible through http (web browser) - original firmware
+
+Notes:
+
+  - there is 128M SPI flash memory in the device
+  - 128k for u-boot (probably)
+  - 4M marked as system-nand0 (probably unused)
+  - the original firmware uses fw1-nand0 flash region (32M)
+  - the satip-axe firmware uses fw2-nand0 flash region (32M)
+  - data block is named data-nand0 - uses rest of flash
+
+Bugs:
+
+  - the Inverto driver do not initialize properly sometimes
+    (minisatip is not started)
+
+        demod900] setup [num_demods 4]
+        [pll6120] setup [num_plls:4] [clk:30000000] [bbgain:16]
+        [fe] Checking lut 0xC1ABEAF0
+        [fe] Checking lut 0xC1ABEB26
+        [fe] Checking lut 0xC1ABEAF0
+        [fe] Checking lut 0xC1ABEB54
+        [dmx] ... init 0
+        [dmx-ts] ... init 0
+        [i2c] I2C bus error /errno -121/!!
+        [i2c] I2C bus error /errno -121/!!
+        [i2c] I2C bus error /errno -121/!!
+        [pll6120] init error!
+        [fta_fe] FE Initialization done, res -1
+
+  - reboot command cannot be used (uboot usb init fails, hw init fails)
+
+History:
+
+
diff --git a/patches/uboot-flash.script b/patches/uboot-flash.script
new file mode 100644
index 00000000..6f8e4670
--- /dev/null
+++ b/patches/uboot-flash.script
@@ -0,0 +1,4 @@
+set filesize
+fatload usb 0 $load_addr satip-axe-@VERSION@.fw
+if test \"${filesize}\" != \"\"; then nand erase fw2-nand0; nand write.jffs2 $load_addr fw2-nand0 $filesize; fi
+if test \"${satip-axe}\" = \"\"; then set bootcmd run\ updatefw\;set\ bootargs\ console\=ttyAS0\,115200\ bigphysarea\=20000\;nboot.jffs2\ \$load_addr fw2-nand0; set satip-axe 1; saveenv; fi
diff --git a/patches/uboot-recovery.script b/patches/uboot-recovery.script
new file mode 100644
index 00000000..935ef60e
--- /dev/null
+++ b/patches/uboot-recovery.script
@@ -0,0 +1 @@
+if test \"${satip-axe}\" != \"\"; then set bootcmd run\ updatefw\;nboot.jffs2\ \$load_addr fw1-nand0; set satip-axe; saveenv; fi
diff --git a/patches/uboot.script b/patches/uboot.script
index 0e120e08..f3d1d8c6 100644
--- a/patches/uboot.script
+++ b/patches/uboot.script
@@ -1,3 +1,3 @@
-fatload usb 0 0x84000000 satip-axe-@VERSION@.fw
+fatload usb 0 $load_addr satip-axe-@VERSION@.fw
 set bootargs console=ttyAS0,115200 bigphysarea=20000
-bootm 0x84000000
+bootm $load_addr