Due to a minor issue in my cable the second solution didn't work.
sudo ./osmocon -p /dev/ttyUSB0 -m c123xor ../../target/firmware/board/compal_e88/loader.compalram.binsudo ./osmoload memload 0x820000 ../../target/firmware/board/compal_e88/monitor.highram.binsudo ./osmoload jump 0x820000This solution works pretty well!./osmocon -p /dev/ttyUSB0 -m c123xor -c ../../target/firmware/board/compal_e88/monitor.highram.bin ../../target/firmware/board/compal_e88/chainload.compalram.binI'm not able to make this one working. The fw is downloaded but not run.monitor.highram.bin has been changed into rssi.highram.bin.