When i try to flash my dead 2100 with a full flash i get the error:

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Waiting for phone to respond .
(please POWER ON phone if necessary).
Error: Test mode failed. Boot not responding - TX1
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im using a geocadin flasher

Ive tried using knok but i get 2 error messages cannot initialise the device and privilaged instruciton.

can someone please help. i normally use the rolis 478 flasher but mine doesnt have a 2100 option