how can i flash the hex dump to the rak4630 ?
Welcome to RAK forum @digi ,
You can use Jlink - WisBlock/bootloader/RAK4630 at master · RAKWireless/WisBlock · GitHub
You can use RAKDAP1 - WisBlock/bootloader/RAK4630 at master · RAKWireless/WisBlock · GitHub
none of these working , i have wisblock 4630 and after updating the firmware the blue light gone , only the green fading in and out , after trying to update the bootloader now only the red color and trun on and off usb , no access in anyways from usb serial or j link all fails
Do you use Jlink or RAKDAP1? If these tools cannot detect the RAK4631, it can be loose connections on wires/jumpers. Unless the nrf52 chip is damaged, it should be detected (at very least).
Nothing is work after updating the bootloader with rui3_nrf52840_bootloader_latest.zip the green light goes off and no serial no at commands nothing even double reset , before that it’s working fine and the problem happens when i choose firmware update over bluetooth from mobile
RUI3 does not support double reset.
If firmware update over BLE failed, you are stuck in bootloader mode.
You have to flash an RUI3 based firmware over USB or JLink.
how over usb because it cannot be flashed because the green light turned off and the dfu mode showed error also and only redlight only now