You need to use Lapse Exploit from https://github.com/Gezine/BD-JB-1250. Once everything ready download the payload from https://github.com/obhq/kernel-dumper/actions/runs/22034179473 then rename kernel-dumper.bin to payload.bin and put it to USB drive. Follow step 4 on the BD-JB-1250 to run the dumper.
You need to use Lapse Exploit from https://github.com/Gezine/BD-JB-1250. Once everything ready download the payload from https://github.com/obhq/kernel-dumper/actions/runs/22034179473 then rename
kernel-dumper.bintopayload.binand put it to USB drive. Follow step 4 on the BD-JB-1250 to run the dumper.