MacBook Pro Massive T2 Fail?

I had many issues with migration. Tried everything. Time Machine did not bring over the home folder.

What I did was on the new machine installed Beta 4. Then after trying to migrate as above from Time Machine this caused nothing but problems and probably attempted three times.

The end result was to Restart with Comimand-R - Erase HD - Reinstall Mojave from Command R Boot Page - Then after complete reboot new MacBook Pro in Target Disk Mode. Did a Migration from the old computer to the new without issues. Beta 5 has now resolved most issues above and beyond the migration problems.

Had the same issue trying to downgrade from Mojave Beta 5 to High Sierra. Erasing the main partition was the fatal mistake I made. Had to return the i9 as there is no way that they can restore the original High Sierra as Apple corporate refuse to give their stores a means to bypass the Security on the T2 chip to re-image the system. Unfortunately the Apple Store in Singapore had no CTO stock and as I needed a notebook for work the next day had to get a re-fund and purchase a stock i7 16 GB 512 GB SSD. Not happy........... If you can wait that is the best option.

Store personnel in Singapore were knowledgable and had come across the same problem 3 times in the last week and tried hard to resolve the issue. Prior to this 4 hours with technical support on the phone on 2 tier levels was extremely frustrating, it was escalated to a higher level during the marathon session to no avail.

Sorry I cant be more positive but my experience says a return is probably the only option.

Thanks.

I think, this is a bit outrageous. Their staff on AppleCare and at the store should be trained and given the tools. I was exacting in describing all steps leading to the failure.

I brought my sales receipt, because I throught they would ask before using a utility.

They wasted and are continuing to waste my time!

>Their staff on AppleCare and at the store should be trained and given the tools.

Take a breath. It's a beta...no way store personnel should be expected to support you in that example - thanks for helping test, but if you can't take responsibility for your role in the risk you should think twice next time.

As a reminder too all - quoting w/original emphasis from the current macOS beta agreement:

https://beta.apple.com/sp/betaprogram/legal

7. Precautions for the use of Pre-Release Software. You understand that to participate in seeds of Pre-Release Software you may need to remove certain pre-loaded, commercial Apple software from your computer and/or device in order to load the Pre-Release Software. You further understand that once you load such Pre-Release Software onto your computer and/or device, you may be unable to revert back to the pre-loaded, commercial release of the Apple software you were using prior to loading the Pre-Release Software or any earlier release of the Pre-Release Software. In addition, applications and services you have installed or been using may be unable to run or function in the same manner because of your use of the Pre-Release Software. YOU ACKNOWLEDGE THAT BY INSTALLING SUCH PRE-RELEASE SOFTWARE ON YOUR APPLE-BRANDED COMPUTERS AND/OR DEVICES, THESE COMPUTERS AND DEVICES MAY NOT BE CAPABLE OF BEING RESTORED TO THEIR ORIGINAL CONDITION AND THAT APPLICATIONS AND SERVICES MAY BE AFFECTED BY YOUR USE OF PRE-RELEASE SOFTWARE. FURTHER, YOU UNDERSTAND THAT DATA (INCLUDING DOCUMENTS) FROM SUCH APPLICATIONS OR SERVICES THAT YOU CREATE OR CHANGE WHILE USING THE PRE-RELEASE SOFTWARE MAY BE INCAPABLE OF BEING RESTORED OR RECOVERED. APPLE SHALL NOT BE RESPONSIBLE FOR ANY COSTS, EXPENSES OR OTHER LIABILITIES YOU MAY INCUR AS A RESULT OF YOUR TESTING, INSTALLATION OR USE OF PRE-RELEASE SOFTWARE, INCLUDING BUT NOT LIMITED TO ANY DAMAGE TO ANY EQUIPMENT, SOFTWARE OR DATA OR ANY LOSS OF DATA OR INFORMATION ARISING FROM YOUR USE OF SUCH PRE-RELEASE SOFTWARE. In addition, the Pre-Release Software may contain errors or inaccuracies that could cause failures, corruption or loss of data and/or information from your computer and/or device or from your peripherals (including, without limitation, servers and printers) connected thereto. Apple strongly encourages you to back-up all data and information on your computer, devices and/or any peripherals prior to your participation in the Beta Program and before any individual seeds. The Pre-Release Software is not intended for use, and should not be used, in production or business-critical systems.

https://www.macobserver.com/community/mgg-forum/2018-macbook-pro-trials-travails-and-caveats/

To Reinstall High Sierra, you MUST use DFU Mode to restore Firmware first if you have wiped the drive.

Takeaway: In order to place the machine in DFU Mode you MUST HOLD DOWN THE POWER KEY FIRST, and THEN press Right-Shift, Left-Control, Left-Option.

See https://discussions.apple.com/thread/8509743