Many advanced users overcome the "Ext RAM Exception" by bypassing the preloader update.
Many guides say “remove battery.” But on sealed phones, that’s impossible. Instead, you need to control the current. sp flash tool error status ext ram exception link
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USB 3.x and USB-C to USB-C cables introduce additional protocol layers that add latency. The BROM and Preloader are expecting bare-metal USB 2.0 full-speed signaling. Many advanced users overcome the "Ext RAM Exception"
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The default DA might be incompatible.
This is risky but often necessary.