diff --git a/boards/common/frdm/Makefile.include b/boards/common/frdm/Makefile.include
index 8a90d4149c..7769a8e6ed 100644
--- a/boards/common/frdm/Makefile.include
+++ b/boards/common/frdm/Makefile.include
@@ -7,24 +7,10 @@ PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.usbmodem*)))
 DEBUG_ADAPTER ?= dap
 #DEBUG_ADAPTER ?= jlink
 
-# OpenOCD v0.10.0 and newer have built-in support for disabling the Kinetis
-# watchdog automatically. Some older releases of Ubuntu and Debian have only
-# version 0.9.0 or earlier OpenOCD packages (Ubuntu 17.04, Debian Jessie)
-# Set this to 1 if you are using one of these older releases.
-USE_OLD_OPENOCD ?= 0
-
-ifeq (1,$(USE_OLD_OPENOCD))
-# We need special handling of the watchdog if we want to speed up the flash
-# verification by using the MCU to compute the image checksum after flashing.
-# wdog-disable.bin is a precompiled binary which will disable the watchdog and
-# return control to the debugger (OpenOCD)
-export OPENOCD_PRE_VERIFY_CMDS += \
-  -c 'load_image $(RIOTCPU)/$(CPU)/dist/wdog-disable.bin 0x20000000 bin' \
-  -c 'resume 0x20000000'
-export OPENOCD_CONFIG ?= $(RIOTBOARD)/common/frdm/dist/old-openocd-$(CPU_FAMILY).cfg
-endif
-
 # Configuration for OpenOCD v0.10.0 and newer
+# For KW41Z, an OpenOCD version built from source is required. The support for
+# kw41z was introduced in
+# https://github.com/ntfreak/openocd/2c8602ed9f084d6680cec7d0ca1d5dc71c865a5f
 export OPENOCD_CONFIG ?= $(RIOTBOARD)/common/frdm/dist/openocd-$(CPU_FAMILY).cfg
 
 # Check the flash configuration field before flashing
diff --git a/boards/common/frdm/dist/old-openocd-kx.cfg b/boards/common/frdm/dist/old-openocd-kx.cfg
deleted file mode 100644
index 72ef312804..0000000000
--- a/boards/common/frdm/dist/old-openocd-kx.cfg
+++ /dev/null
@@ -1,46 +0,0 @@
-#
-# Freescale Kinetis Kxx devices when using old OpenOCD versions (<0.10.0)
-#
-source [find target/swj-dp.tcl]
-
-if { [info exists CHIPNAME] } {
-    set _CHIPNAME $CHIPNAME
-} else {
-    set _CHIPNAME kx
-}
-
-if { [info exists CPUTAPID] } {
-    set _CPUTAPID $CPUTAPID
-} else {
-    set _CPUTAPID 0x2ba01477
-}
-
-set _TARGETNAME $_CHIPNAME.cpu
-
-swj_newdap $_CHIPNAME cpu -irlen 4 -expected-id $_CPUTAPID
-
-target create $_TARGETNAME cortex_m -chain-position $_CHIPNAME.cpu
-
-$_CHIPNAME.cpu configure -event examine-start { puts "START..." ; }
-
-# It is important that "kinetis mdm check_security" is called for
-# 'examine-end' event and not 'eximine-start'. Calling it in 'examine-start'
-# causes "kinetis mdm check_security" to fail the first time openocd
-# calls it when it tries to connect after the CPU has been power-cycled.
-$_CHIPNAME.cpu configure -event examine-end {
-    kinetis mdm check_security
-}
-
-$_TARGETNAME configure -work-area-phys 0x20000000 -work-area-size 0x1000 -work-area-backup 0
-
-flash bank $_CHIPNAME.flash kinetis 0 0 0 0 $_TARGETNAME
-
-cortex_m reset_config sysresetreq
-#reset_config srst_only srst_nogate connect_assert_srst
-
-adapter_khz 1000
-
-$_TARGETNAME configure -event gdb-attach {
-  halt
-}
-$_TARGETNAME configure -rtos auto