No recovery, cannot flash using Odin or Heimdall

[andrewedmondson]

I installed CM 13.0 nightly a month ago so that I could run a particular app. For some strange reason, I lost root access but managed to install most previous programs and the phone worked well. Two nights ago I restarted the phone. CM tried to start but it switched off. After that, only the splash screen appears. If I try to enter recovery, the phone vibrates but does nothing.

I have tried to use Odin to flash recovery but it gets stuck on Initialising ...

I tried Heimdall on a Linux machine but it fails at Initialising protocol...
ERROR: Failed to send data!Releasing device interface...

Here is the output from sudo heimdall print-pit --verbose in case anyone can help.

TIA

Heimdall v1.4.0

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Initialising connection...
Detecting device...
Manufacturer: "Sasmsung"
Product: "MSM8960"

length: 18
device class: 2
S/N: 0
VIDID: 04E8:685D
bcdDevice: 0100
iMan:iProd:iSer: 1:2:0
nb confs: 1

interface[0].altsetting[0]: num endpoints = 1
Class.SubClass.Protocol: 02.02.01
endpoint[0].address: 82
max packet size: 0010
polling interval: 09

interface[1].altsetting[0]: num endpoints = 2
Class.SubClass.Protocol: 0A.00.00
endpoint[0].address: 81
max packet size: 0200
polling interval: 00
endpoint[1].address: 01
max packet size: 0200
polling interval: 00
Claiming interface...
Setting up interface...

Initialising protocol...
WARNING: Control transfer #1 failed. Result: -9
WARNING: Control transfer #2 failed. Result: -9
WARNING: Control transfer #3 failed. Result: -9
WARNING: Control transfer #4 failed. Result: -9
WARNING: Control transfer #5 failed. Result: -9
WARNING: Control transfer #6 failed. Result: -9
ERROR: Failed to send data: "ODIN"
Releasing device interface...