Cert file and repair imei SM A700Fd

Any solution yet for repair imei samsung sm a700fd? Ive been waiting this for long time,maybe others too. Please support this phone for imei repairing. I use my phone with wifi only for a long time. Ive accidently lost my cert back up. When i try to restore it with my cert file, that i recover from windows,it say corrupt cert file in octopus.I use octopus with samsung and LG activation… thanks for concern

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