SKU: 78760599385

BY U301 ROM Assistant MacBook USB_C Chip Data Read Write Repair Tool

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Description

BY U301 ROM Assistant MacBook USB_C Chip Data Read Write Repair ToolBY U301 Data Backup Write Read Assistant Tool for MacBook. BY U301 Data Assistant suppoor read and write USB_C ROM chip data, write the ROM chip data (CD3215 and CD3217). U301 Features: 1. Used to read and write USB_C ROM chip data (CD3215 and CD3217) 2. U301 contains the original ROM data of the 2016 2020 USB_C chip, a total of 26 3. The Type_C circuit of the MacBook adopts the 5V 20V boost process. If the ROM data of USB_C is damaged, the

BY-U301 Data Backup Write Read Assistant Tool for MacBook. BY-U301 Data Assistant suppoor read and write USB_C ROM chip data, write the ROM chip data (CD3215 and CD3217).

U301 Features:
1. Used to read and write USB_C ROM chip data (CD3215 and CD3217)
2. U301 contains the original ROM data of the 2016-2020 USB_C chip, a total of 26
3. The Type_C circuit of the MacBook adopts the 5V-20V boost process. If the ROM data of USB_C is damaged, the motherboard will only have a 5V power supply.
4. When the power supply of the MacBook motherboard changes from 0V to 5V, it means that the USB_C ROM data is damaged.
5. Use the U301 tool to write the ROM data of the corresponding model, so that the motherboard power supply is normally boosted to 20V

Applicable models:
1. Applicable to all MacBooks with Type_C interface from 2016 to 2020
2. The USB_C chip of the MacBook from 2016 to 2018 uses CD3215
3. The USB_C chip of MacBook from 2019 to 2020 uses CD3217

The board number, ROM chip and year corresponding to the machine
A1706 820-00239-A U2890, A1706 820-00239-A UB090 2016
A1706 820-00923-A U2890, A1706 820-00923-A UB090 2017
A1707 820-00281-A U2890, A1707 820-00281-A UB090 2016
A1707 820-00928-A U2890, A1707 820-00928-A UB090 2017
A1708 820-00875-A U2890 2016
A1708 820-00840-A U2890 2017
A1932 820-01521-02 U2890 2018
A1989 820-00850-A U2890, A1989 820-00850-A UB090 2018
A1990 820-01041-A U2890, A1990 820-01041-A UB090 2018
A1990 820-01814-01 U2890, A1990 820-01814-01 UB090 2018
A2141 820-01700-A U2890, A2141 820-01700-A UB090 2019
A2251 820-01949-07 U3060, A2251 820-01949-07 UB260 2020
A2159 820-01598-A U2890 2019
A2179 820-01958-A U3060 2020
A2289 820-01987-06 U2890 2020
A2337 820-02016-A UF260 2020
A2338 820-02020-A UF260 2020

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 78760599385

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4.7 ★★★★★
Based on 11 reviews
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B
Verified Purchase
Barbara R
Pawtucket, US
★★★★★ 4
Enjoyable, entertaining, engrossing
Format: Kindle
The Three Women, their JMT trail name, is a delightful read. You experience the beauty of nature and the wonders seen in the trail. You also experience the fear and anxiety that come with making such a trek. The bonds of friendship and support between the three and also all the other through hikers. An amazing read, the perfect balance of nature, friendship, compassion, struggle, and determination. Immerse yourself in this well written book.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2024
P
Verified Purchase
PF Moore
Bozeman, US
★★★★★ 5
An epic adventure, page after page!
Format: Paperback
Many women dream of making this hike (I once did) but few lace up their boots and get on the trail. And even a tiny fraction of those who DO realize their goal, could capture the experience like Joan Griffin. I read several chapters a night and always looked forward to getting back on the trail with her from my rocking chair. The grandeur of the sights, the wonder of seeing the world well above 8,000 feet ~ for 27 days ~ reads like a personal diary. Every perspective, high and low, is captured: the practical issues of carrying on even with a twisted ankle on Day 1, then blisters, surviving sudden weather changes, confronting inner doubts, securing essential food and water, and losing the camera enrich the book in an authentic style. In between all this, the reader remembers that it all took place with 40 pound backpacks on their backs! It's a magical but real-life journey with the inevitable personality differences of the Three Women, as well as their uniquely personal reasons to hike. As the brave heroes arrive to the finish line, one is aware of the power of grace that accompanied them all along. Yes, this experience changed the hikers but it also changes the reader. Being aware of those who live curiously and courageously provides a kind of encouragement for us to do the same, even after age 50.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 12, 2024
A
Verified Purchase
Alicia Crumpton
Belleville, US
★★★★★ 5
Inspirational Read
Format: Paperback, Format: Paperback
Griffin, J. M. (2023). Force of nature: Three women tackle the John Muir Trail. Black Rose Writing. Joan Griffin loves exploring and lives in the Northern California foothills of the Sierra Nevada. Five legs, 27 days, 195.9 miles, this is a memoir of three 50+ women hiking the John Muir Trail located in the Sierra Nevada Mountain range. Each day receives its own chapter providing a vivid description of the trail, challenges, and beauty. Walking created an "unpredictable reality," that was "bigger in every conceivable way than [her] imagination could have conjured." As you read through the story, you are transported to the trail, so vivid her recollections and descriptions of their experiences. She wore a necklace with the words strength, courage, and spirit; a mantra that served her well along the journey. Griffin found: "I found my very soul had acclimated to the natural world, and I was completely in tune with the Earth and the sky and the water surrounding me." Such an inspiring memoir! This would be a good read for 50+ women who need a good dose of inspiration, those who like travel memoirs, and those interested in long-haul walking.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2024
C
Verified Purchase
CJM
Whiting, US
★★★★★ 5
Arm chair traveling on a cold winter retreat
Format: Paperback
This was the perfect book to get me back into reading! I’ve happily filled my evenings, transported to the John Muir Trail traveled by The Three Women. Your descriptions of such an immense beauty and reflections of your personal journey were at times like being on the trail with you all! An inspirational read!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025
A
Verified Purchase
ALLshop
San Leandro, US
★★★★★ 4
A great tale of women trekking together
Format: Kindle
This is well -written, enjoyable to read, and like the three women on the trail as a reader you don't want it to end as they near the end of the JMT. Filled with beautiful descriptions of scenery, humorous retelling of some difficult days, and interesting encounters with other people. Even for the non-hiker this book is a fun read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2024

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