BY-U301 DATA ASSISTANT FOR MACBOOK READ WRITE BACKUP REPAIR

Introduction to U301 and applicable models
Introduction:

· 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

Payment

Accept payment for PayPal, WesternUnion, AliPay, MonetyGram, Sigue, Ria, Bank transfer & Credit card

Shipment

1. Airmail Registered: If you choose this option, your item will be sent by Singapore Post Airmail. The delivery time varies from 15-45 days in different countries. For more details, you can visit: https://track.4px.com/

2. DHL: If you choose this option, your item will be sent by DHL Express. The delivery time is 3-5 working days. Before you choose this option, please check if your location is in the DHL Remote Areas list. You can visit: https://www.dhl.com/

3. EMS: If you choose this option, your item will be sent by EMS Express. The delivery time varies from 5-20 days in different countries. For more details, you can visit: https://www.ems.com.cn/english

4. The shipping time may be delayed in busy seasons. For more details, please feel free to contact us.

We are only responsible for the tax/duty generated in China.
We are NOT responsible for any tax/duty in the destination countries.
If you need items to declare the value of the customs, please leave us message.

• For IC Chipsets, there are generally two conditions
  1) Original New: Original new chips are taken from manufacturer vacuum sealed package with QA/QC markings, which means they are all well verified and tested. The quality is superior.
  2) Manufacturer Refurbished: Manufacturer refurbished chips are renewed and tested by the manufacturer. They quality is secondary to original new chips.
  
• You can check the items as soon as you receive them. If you find the quality not acceptable, you can return them to us within 90 days, and we are assured to replace them or refund you.
  
• If the chips are already soldered and not in selling condition, they cannot be returned.
  
• We guarantee to ship out your order within 1-2 working days. If you do not receive your purchase within 60 days, you can ask for a full refund.