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Modem stopped working on BH
LazLong
Pine Adept
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Joined: Jul 2020
Posts: 51

Reputation: 4
#38
09-13-2020, 05:44 PM
(09-12-2020, 09:03 PM)Djhg2000 Wrote: Apparently we should be able to pull USB_BOOT high (1.8V) on the modem to enter "Emergency Download Mode" where it can apparently be flashed over USB even with a corrupt firmware.

Now, the USB_BOOT pin is routed on the v1.2 schematics to test pad T1501 but the test points are not labeled. Does anyone know which test pads are which on the motherboard?

Also I'd like to suggest adding a software controlled switch (or MOSFET) for this on the v1.3 board so that we can recover soft-bricked modems without opening the phone.
Interesting.  Hopefully someone will be able to help identify/define the test pads.  Those of us with defunct modems with corrupted firmware will greatly
appreciate it.
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Messages In This Thread
Modem stopped working on BH - by afigegoznaet - 07-12-2020, 11:49 PM
RE: Modem stopped working on BH - by Subsentient - 07-13-2020, 07:15 AM
RE: Modem stopped working on BH - by afigegoznaet - 07-13-2020, 07:30 AM
RE: Modem stopped working on BH - by bcnaz - 07-13-2020, 10:24 PM
RE: Modem stopped working on BH - by afigegoznaet - 07-14-2020, 12:14 AM
RE: Modem stopped working on BH - by mil - 07-13-2020, 07:06 PM
RE: Modem stopped working on BH - by Subsentient - 07-13-2020, 09:29 PM
RE: Modem stopped working on BH - by afigegoznaet - 07-14-2020, 08:13 AM
RE: Modem stopped working on BH - by afigegoznaet - 07-14-2020, 04:10 AM
RE: Modem stopped working on BH - by afigegoznaet - 07-14-2020, 05:56 AM
RE: Modem stopped working on BH - by mil - 07-14-2020, 07:50 PM
RE: Modem stopped working on BH - by afigegoznaet - 07-15-2020, 01:36 AM
RE: Modem stopped working on BH - by afigegoznaet - 07-15-2020, 03:49 AM
RE: Modem stopped working on BH - by afigegoznaet - 07-15-2020, 01:02 PM
RE: Modem stopped working on BH - by leibide - 07-24-2020, 02:07 PM
RE: Modem stopped working on BH - by bcnaz - 07-24-2020, 03:30 PM
RE: Modem stopped working on BH - by SwordfishII - 08-01-2020, 04:34 AM
RE: Modem stopped working on BH - by bcnaz - 08-01-2020, 12:07 PM
RE: Modem stopped working on BH - by bcnaz - 08-01-2020, 10:45 AM
RE: Modem stopped working on BH - by SwordfishII - 08-01-2020, 06:12 PM
RE: Modem stopped working on BH - by bcnaz - 08-14-2020, 06:19 PM
RE: Modem stopped working on BH - by bcnaz - 08-15-2020, 12:59 AM
RE: Modem stopped working on BH - by afigegoznaet - 08-15-2020, 02:26 PM
RE: Modem stopped working on BH - by bcnaz - 08-15-2020, 02:57 PM
RE: Modem stopped working on BH - by afigegoznaet - 08-15-2020, 11:42 PM
RE: Modem stopped working on BH - by Veraendert - 08-31-2020, 06:03 AM
RE: Modem stopped working on BH - by afigegoznaet - 08-31-2020, 06:20 AM
RE: Modem stopped working on BH - by Veraendert - 08-31-2020, 10:02 AM
RE: Modem stopped working on BH - by bcnaz - 08-31-2020, 04:43 PM
RE: Modem stopped working on BH - by afigegoznaet - 09-01-2020, 12:02 AM
RE: Modem stopped working on BH - by LazLong - 09-05-2020, 09:20 PM
RE: Modem stopped working on BH - by afigegoznaet - 09-06-2020, 11:50 PM
RE: Modem stopped working on BH - by LazLong - 09-07-2020, 06:46 PM
RE: Modem stopped working on BH - by bcnaz - 09-07-2020, 05:40 PM
RE: Modem stopped working on BH - by Djhg2000 - 09-12-2020, 09:03 PM
RE: Modem stopped working on BH - by LazLong - 09-13-2020, 05:44 PM
RE: Modem stopped working on BH - by biktorgj - 09-16-2020, 05:18 AM
RE: Modem stopped working on BH - by LazLong - 09-16-2020, 05:24 PM
RE: Modem stopped working on BH - by LazLong - 09-18-2020, 11:09 AM
RE: Modem stopped working on BH - by bitnick - 09-13-2020, 04:04 AM
RE: Modem stopped working on BH - by Djhg2000 - 09-13-2020, 06:19 AM
RE: Modem stopped working on BH - by Helium75 - 09-18-2020, 02:32 PM

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