Nope, you should first keep the chip and flash the Japhar image with SSL89J.

Then only after replace the chip by the Japhar Sim.

The point here is that the SSL89 is not accepting to flash the older SSL (that is only the SSL88). So once your original box has an SSL89, you must only flash an SSL89 or SSL89J (as well as image needs to contain it, or you flash the image and immediately after flash the SSL89J, then only reboot the box).

TS
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