I have a Sharp Mobilon HC-4500 and am running the factory installed WinCE 2.0. If there is any way to do so, I'd like to upgrade to 3.0. I don't know if there is a way to "flash" the ROM chip or a way to purchase one with the new OS. Can anyone help?

FYI, the upgrade from Sharp expired over a year ago. Your only hope is to find the rom chip on e-bay or search message boards. If you have purchased a SHARP MOBILON 4100, 4500, or 4600 HANDHELD PC,you are entitled to recieve a callisto handheld PC ROM UPGRADE that incorporates the microsoft windows CE 2.11 operating system with the payment of a $10.00 shipping and handling fee. For a limited time, Sharp is offering its Mobilon customers a handheld PC ROM upgrade that incorporates Microsoft’s Windows CE operating system, Version 2.11. This upgrade kit includes several key software features and is easy to install. To take advantage of this offer, please fill out the information on the form below and return it in an envelope addressed to Sharp Electronics Corporation (address).If you wish to pay with a credit card, you may submit the completed form electronically through our Web site at www.sharp-usa.com. You may wish to make a copy of the form for your records. Upon receipt of payment and a properly completed form, Sharp will ship the new Callisto Upgrade to you as soon as possible, but no later than 90 days after your request is received. You need only pay a $10.00 handling and shipment charge. Please note that this offer is being made for a limited time only and that to receive an upgrade kit at this price, customers must respond with payment and a properly completed form by no later than May 29, 2001. Because of the limited availability of upgrade kits, we will not be able to extend this deadline, and we will not be offering this upgrade opportunity in the future. You should also note that this upgrade opportunity is only available to customers who purchased Mobilon 4100, 4500 and 4600 handheld PC. RETURN THIS FORM WITH YOUR PAYMENT: I am the purchaser of a Sharp Mobilon ________ (fill in the correct model number 4100, 4500, or 4600) handheld PC. I understand that to participate in this offer I must have purchased my handheld PC and that I must include the serial number of my handheld PC with my order. I would like a Callisto Upgrade. Please deliver my Upgrade to the following address: NAME: _________________________________________________ STREET ADDRESS: _____________________________________________ CITY AND STATE: ______________________________ ZIP CODE: _______ ____ My check for $10.00 is enclosed (make checks payable to Sharp Place.com) Mail check and completed form to the following address: [Address] ____ Please charge my ____ Visa _____ MasterCard _____ American Express Credit Card Number Expiration Date (Month/Year) CREDIT CARD HOLDER: PLEASE PROVIDE THE FOLLOWING INFORMATION: NAME: _________________________________________________ BILLING ADDRESS________________________________________________________ ZIP CODE: _______ DAYTIME TELEPHONE NUMBER: ________________ I hereby certify that I bought a Sharp Mobilon ________ (fill in the correct model number 4100, 4500, or 4600).The serial number of my Mobilon is ______________ . DATED:______________, 20__.