From Sony Japan (translated):
Notification of free repairs and apology to customers who use CFexpress Type A memory cards CEA-G series
Thank you for using Sony products. We have discovered that in some CFexpress Type A memory cards in the CEA-G series, there are rare cases where the card is not recognized or writing does not finish in low-temperature environments near the lower limit of operating temperature (-10°C).
Therefore, we will repair the affected products free of charge during the free repair period listed below. If you are using an affected memory card product, please check whether your product is eligible for free repair, and if so, please apply via the website below or contact us at the address listed below. We apologize for any inconvenience caused to customers using the affected products. We appreciate your continued patronage of our products.
Products
CFexpress Type A memory cards CEA-G series
CEA-G80T / CEA-G160T / CEA-G320T / CEA-G640T that have the specific numbers listed below printed on the back of the product
How to check for applicable items
The following numbers are printed on the back of the product.
*Please take a photo of the number on the back of the product using your smartphone or other device, enlarge it, and check the number.
(1) CEA-G80T:
Products with 8-digit numbers 22030050 to 23050157, except for products with the following numbers: 22030077, 22030094 , 22040022, 22050028, 22050067, 22070075, 22110010, 22110015, 22110029, 22110037, 22110103 Products with the nine-digit number 220300500 to 230501570
(2) CEA-G160T:
Products with 8-digit numbers 22030127 to 24029999,
except for products with the following numbers:
22040025, 22040068, 22050029 , 22050068, 22070076
Products with a 9-digit number between 220301270 and 240299990
(3) CEA-G320T:
Products with 8-digit numbers between 22090001 and 24029999
Products with a 9-digit number between 220900010 and 240299990
(4) CEA-G640T:
Products with 8-digit numbers between 23010001 and 24029999
Products with a 9-digit number between 230100010 and 240299990
Free repair period
Until June 29, 2029
Confirmation of applicable items by number
Enter the number in the "Apply online" [Japan] section below and press the "Proceed to confirmation/application screen" button to check whether or not your product is eligible for free repair.
at B&H.