From 8390996ef6fa5dbcea989767b3795f2ffa4c8259 Mon Sep 17 00:00:00 2001 From: on1aad Leo Bistmans Date: Wed, 28 Oct 2026 19:26:36 +0100 Subject: [PATCH] Retevis C62 short flash guide. --- hardware/c62.md | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/hardware/c62.md b/hardware/c62.md index 559cdbe..2234a2f 100644 --- a/hardware/c62.md +++ b/hardware/c62.md @@ -5,6 +5,31 @@ multi-core SoC that pairs an ARM Cortex-M33 application core with a Cadence HiFi DSP and a small NPU. The DSP and NPU drive the radio's "AI noise reduction". RF is handled by a BK4819, the same chip found in the Quansheng UV-K5, with a BK1080 for broadcast FM. + +## flash current build + +28 october 2026: +Expect working fm rx and tx, no battery status, empty config after device reboot. +Find openrtx-c62.zip on https://github.com/OpenRTX/OpenRTX/pull/550 and unzip + +Where to find cskburn tool +https://github.com/LISTENAI/cskburn/releases/tag/v1.30.0 + cskburn --version + v1.30.0 (403) +Note 1.31 might have a bug, unable to take backup firmware from device. + +Connect kenwood 2 plug to usb, press lower ptt and turn on C62. +You have to do this after every action, as the radio gets reset. + +Check cable communication ( serial port might be different ) + cskburn -C 6 -s /dev/ttyUSB4 --chip-id -b 115200 + +Take backup off current firmware: + cskburn --read "0x0:4194304:factory_.bin" -C 6 -b 115200 -v -s /dev/ttyUSB4 + +Put downloaded OpenRTX bin on the radio + cskburn -s /dev/ttyUSB4 -C 6 -b 115200 0x000000 zephyr.bin + ## Development status