diff --git a/ports/nrf/boards/nrf52840_open_bootloader_1.2.x.ld b/ports/nrf/boards/nrf52840_open_bootloader_1.2.x.ld
new file mode 100644
index 0000000000..c23a2dbda4
--- /dev/null
+++ b/ports/nrf/boards/nrf52840_open_bootloader_1.2.x.ld
@@ -0,0 +1,5 @@
+/* GNU linker script for nrf52840 Open Bootloader version 1.2.x */
+
+_bootloader_head_size = 0x1000;  /* MBR */
+_bootloader_tail_size = 0x20000; /* Bootloader start address 0x000E0000 */
+_bootloader_head_ram_size = 0x8;