Hi everyone, first post here – long-time reader though. I have a dead MacBook Air M1 (2020) that won't charge or power on.
Device info:
MacBook Air (M1, 2020)
Model j313ap (A2337, logic board 820-02016)
Symptom:
No charging, no power on at all.
Restore attempts:
Apple Configurator finds the MacBook in DFU mode, as Linux with lsusb: Bus 001 Device 021: ID 05ac:1227 Apple, Inc. Mobile Device (DFU Mode).
It looks like the MacBookAir is in firmware boot loop. I have tried to restore 14.x version and 26.2 (latest) version firmware, but just after iBSS send I see at Dmesg: apple-mfi-fastcharge 1-5: USB disconnect, device number 29
Device restore shows this:
Voltage measurements:
LOGIC BOARD DETACHED (NO CONNECTORS EXCEPT USB BOARD):
PPBUS_AON: 11.96V (C5804)
PP3V8_AON_VDDMAIN: 3.79V (C5895)
PP5V_S2: 5.18V (CP717)
PP3V3_S2_UPC: 3.29V(CF751)
PP3V3_UPC0_LDO: 3.27V (RF242)
PP3V3_UPC1_LDO: 3.29V (CF508)
PP1V5_UPC0_LDO_CORE: 1.59V (CF405)
PP1V5_UPC1_LDO_CORE: 1.585V (CF505)
PP1V8_AON: 1.801V (CR851)
LOGIC BOARD IN PLACE AND ALL CONNECTORS:
PP1V8_S2: 1.796V (JR850)
PP1V25_S2: 1.223V (JF202 PIN 12)
Other tests:
Multiple USB cables/ports tried.
Question:
Voltages look good. Is this almost certainly dead NAND/SSD or are there other common things to check on 820-02016 boards (e.g. PMIC, SoC ROM, etc.)? Worth trying NAND reball/reflow or is the board scrap?
Thank you in advance for your kind answers.
Device info:
MacBook Air (M1, 2020)
Model j313ap (A2337, logic board 820-02016)
Symptom:
No charging, no power on at all.
Restore attempts:
Apple Configurator finds the MacBook in DFU mode, as Linux with lsusb: Bus 001 Device 021: ID 05ac:1227 Apple, Inc. Mobile Device (DFU Mode).
It looks like the MacBookAir is in firmware boot loop. I have tried to restore 14.x version and 26.2 (latest) version firmware, but just after iBSS send I see at Dmesg: apple-mfi-fastcharge 1-5: USB disconnect, device number 29
Device restore shows this:
Command: idevicerestore -e UniversalMac_26.2_25C56_Restore.ipsw
Found device in DFU mode
ECID: 7055480287406366
Identified device as j313ap, MacBookAir10,1
Device Product Version: N/A
Device Product Build: N/A
Extracting BuildManifest from IPSW
IPSW Product Version: 26.2
IPSW Product Build: 25C56 Major: 25
Device supports Image4: true
Variant: Customer Erase Install (IPSW)
This restore will erase all device data.
Performing macOS restore
##################################[ WARNING ]#################################
# You are about to perform an *ERASE* restore. ALL DATA on the target device #
# will be IRREVERSIBLY DESTROYED. If you want to update your device without #
# erasing the user data, cancel now and restart without -e or --erase #
# command line switch. #
# Type YES and press ENTER to continue, or hit CTRL+C to cancel. #
##############################################################################
> YES
Checking IPSW for required components...
All required components found in IPSW
Getting ApNonce in DFU mode... 7e a0 3f 15 bd 03 bd 5b 79 cd c6 21 7b 76 39 d7 fa f4 e8 88 a3 ac 0a 19 12 c6 b7 d3 be cb 61 56
Trying to fetch new SHSH blob
Getting SepNonce in dfu mode... b2 86 47 9d fc b7 b7 96 ab 7f 80 9f a7 a3 60 eb 2a e3 ec 75
Received SHSH blobs
Getting SepNonce in dfu mode... b2 86 47 9d fc b7 b7 96 ab 7f 80 9f a7 a3 60 eb 2a e3 ec 75
Received SHSH blobs
Getting SepNonce in dfu mode... b2 86 47 9d fc b7 b7 96 ab 7f 80 9f a7 a3 60 eb 2a e3 ec 75
Received SHSH blobs
Extracting iBSS.j313.RELEASE.im4p (Firmware/dfu/iBSS.j313.RELEASE.im4p)...
Personalizing IMG4 component iBSS...
Sending iBSS (770863 bytes)...
Uploading [==================================================] 100.0%
Device did not reconnect in DFU or recovery mode. Possibly invalid iBSS. Reset device and try again.
Unable to place device into recovery mode from DFU mode
Found device in DFU mode
ECID: 7055480287406366
Identified device as j313ap, MacBookAir10,1
Device Product Version: N/A
Device Product Build: N/A
Extracting BuildManifest from IPSW
IPSW Product Version: 26.2
IPSW Product Build: 25C56 Major: 25
Device supports Image4: true
Variant: Customer Erase Install (IPSW)
This restore will erase all device data.
Performing macOS restore
##################################[ WARNING ]#################################
# You are about to perform an *ERASE* restore. ALL DATA on the target device #
# will be IRREVERSIBLY DESTROYED. If you want to update your device without #
# erasing the user data, cancel now and restart without -e or --erase #
# command line switch. #
# Type YES and press ENTER to continue, or hit CTRL+C to cancel. #
##############################################################################
> YES
Checking IPSW for required components...
All required components found in IPSW
Getting ApNonce in DFU mode... 7e a0 3f 15 bd 03 bd 5b 79 cd c6 21 7b 76 39 d7 fa f4 e8 88 a3 ac 0a 19 12 c6 b7 d3 be cb 61 56
Trying to fetch new SHSH blob
Getting SepNonce in dfu mode... b2 86 47 9d fc b7 b7 96 ab 7f 80 9f a7 a3 60 eb 2a e3 ec 75
Received SHSH blobs
Getting SepNonce in dfu mode... b2 86 47 9d fc b7 b7 96 ab 7f 80 9f a7 a3 60 eb 2a e3 ec 75
Received SHSH blobs
Getting SepNonce in dfu mode... b2 86 47 9d fc b7 b7 96 ab 7f 80 9f a7 a3 60 eb 2a e3 ec 75
Received SHSH blobs
Extracting iBSS.j313.RELEASE.im4p (Firmware/dfu/iBSS.j313.RELEASE.im4p)...
Personalizing IMG4 component iBSS...
Sending iBSS (770863 bytes)...
Uploading [==================================================] 100.0%
Device did not reconnect in DFU or recovery mode. Possibly invalid iBSS. Reset device and try again.
Unable to place device into recovery mode from DFU mode
Voltage measurements:
LOGIC BOARD DETACHED (NO CONNECTORS EXCEPT USB BOARD):
PPBUS_AON: 11.96V (C5804)
PP3V8_AON_VDDMAIN: 3.79V (C5895)
PP5V_S2: 5.18V (CP717)
PP3V3_S2_UPC: 3.29V(CF751)
PP3V3_UPC0_LDO: 3.27V (RF242)
PP3V3_UPC1_LDO: 3.29V (CF508)
PP1V5_UPC0_LDO_CORE: 1.59V (CF405)
PP1V5_UPC1_LDO_CORE: 1.585V (CF505)
PP1V8_AON: 1.801V (CR851)
LOGIC BOARD IN PLACE AND ALL CONNECTORS:
PP1V8_S2: 1.796V (JR850)
PP1V25_S2: 1.223V (JF202 PIN 12)
Other tests:
Multiple USB cables/ports tried.
Question:
Voltages look good. Is this almost certainly dead NAND/SSD or are there other common things to check on 820-02016 boards (e.g. PMIC, SoC ROM, etc.)? Worth trying NAND reball/reflow or is the board scrap?
Thank you in advance for your kind answers.
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