2017 Ford Focus BEV TCU 4G upgrade

Ford Non SYNC 3 Support
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I have read the excellent 2017 MKZ hybrid 4g TCU upgrade discussion (2017 MKZ hybrid 4g TCU upgrade) and thanks to @chadmees and @F150Chief for all the work and documentation of the process.
I am going to attempt the same on my 2017 Ford Focus BEV. I have obtained a 2017-2019 Ford Escape Telematic Communication Control Module HJ5T-14G087-UF on eBay and will use the Bingfu 4G antennae as did Chad. Before I start, I have a few questions I was hoping to get answered:

  1. Would it be wise to us the Syn3 Updater before starting the process or wait until after the 4G upgrade?
  2. should this be the first step performed in starting the upgrade process? “set the first line of the asbuilt to 754-01-01 B100 xx to force an unprovisioned factory mode”
  3. are there any issues to be aware of in attaching a battery charger to the 12v battery in the Focus BEV?
  4. Has anyone else already tried this on the Focus BEV?

Thanks again Chad and F150Chief and in advance to anyone else who responds!

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  1. Probably best to do this before so you can set the required asbuilt changes to the APIM.
  2. Once you have the S/N of the TCU showing on the APIM screen, and you have added your vehicle to your FordPass account, then perform the asbuilt change.
  3. There should not be, but read your owners manual. It will tell you if and how it should be connected.
  4. Probably…
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If your TCU has a hotspot and you plan to use it you will need the original VIN from the donor car.

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Thank you for your response!
I’ll do the Sync upgrade soon.
I had thought adding the vehicle to FordPass was the last step but I’ll follow your instruction.
Your help is appreciated!

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Thank you for your response!
Not sure if I have hotspot ability but I’ll keep this advice in mind and check it out.